bhnd(4): Correct some typos in source code comments

- s/occured/occurred/

While here, fix some whitespace issues.

MFC after:	3 days

sys/dev/bhnd/bcma/bcma_erom.c

@@ -720,13 +720,13 @@ bcma_erom_seek_matching_core(struct bcma_erom *sc,
 		return (0);
 	}
 
-	/* Not found, or a parse error occured */
+	/* Not found, or a parse error occurred */
 	return (error);
 }
 
 /**
  * Read the next core descriptor from the EROM table.
- * 
+ *
  * @param erom EROM read state.
  * @param[out] core On success, will be populated with the parsed core
  * descriptor data.

sys/dev/bhnd/bhnd.h

@@ -819,7 +819,7 @@ bhnd_read_iost(device_t dev, uint16_t *iost)
  * @param dev The device to query.
  *
  * @retval true If @p dev is held in RESET or not clocked (BHND_IOCTL_CLK_EN),
- * or an error occured determining @p dev's hardware state.
+ * or an error occurred determining @p dev's hardware state.
  * @retval false If @p dev is clocked and is not held in RESET.
  */
 static inline bool

sys/dev/bhnd/bhnd_bus_if.m

@@ -616,7 +616,7 @@ METHOD int read_iost {
  * @param child The device to query.
  *
  * @retval true If @p child is held in RESET or not clocked (BHND_IOCTL_CLK_EN),
- * or an error occured determining @p child's hardware state.
+ * or an error occurred determining @p child's hardware state.
  * @retval false If @p child is clocked and is not held in RESET.
  */
 METHOD bool is_hw_suspended {

sys/dev/bhnd/bhnd_erom.c

@@ -159,7 +159,7 @@ bhnd_erom_probe_driver_classes(devclass_t bus_devclass,
 
 /**
  * Allocate and return a new device enumeration table parser.
- * 
+ *
  * @param cls		The parser class for which an instance will be
  *			allocated.
  * @param eio		The bus I/O callbacks to use when reading the device
@@ -167,7 +167,7 @@ bhnd_erom_probe_driver_classes(devclass_t bus_devclass,
  * @param cid		The device's chip identifier.
  *
  * @retval non-NULL	success
- * @retval NULL		if an error occured allocating or initializing the
+ * @retval NULL		if an error occurred allocating or initializing the
  *			EROM parser.
  */
 bhnd_erom_t *

sys/dev/bhnd/nvram/bhnd_nvram_data_sprom.c

@@ -359,7 +359,7 @@ bhnd_nvram_sprom_getvar_direct(struct bhnd_nvram_io *io, const char *name,
 	if (error == ENOENT)
 		return (ENOENT);
 
-	/* Some other parse error occured */
+	/* Some other parse error occurred */
 	return (error);
 }
 

sys/dev/bhnd/nvram/bhnd_nvram_io.c

@@ -41,9 +41,9 @@ __FBSDID("$FreeBSD$");
 #include "bhnd_nvram_io.h"
 #include "bhnd_nvram_iovar.h"
 
-/** 
+/**
  * Read exactly @p nbytes from @p io at @p offset.
- * 
+ *
  * @param io NVRAM I/O context.
  * @param offset The offset within @p io at which to perform the read.
  * @param[out] buffer Output buffer to which @p nbytes from @p io will be
@@ -51,7 +51,7 @@ __FBSDID("$FreeBSD$");
  * @param nbytes The maximum number of bytes to be read from @p io.
  *
  * @retval 0 success
- * @retval EIO if an input error occured reading @p io.
+ * @retval EIO if an input error occurred reading @p io.
  * @retval ENXIO if the request for @p offset or @p nbytes exceeds the size
  * of @p io.
  * @retval EFAULT if @p io requires I/O request alignment and @p offset is
@@ -69,11 +69,11 @@ bhnd_nvram_io_read(struct bhnd_nvram_io *io, size_t offset, void *buffer,
 /**
  * Attempt to fetch a pointer to @p io's internal read buffer, if
  * supported by @p io.
- * 
+ *
  * The returned pointer is only gauranteed to be valid until the next I/O
  * operation performed on @p io; concrete implementations of bhnd_nvram_io
  * may provide stronger gaurantees.
- * 
+ *
  * @param io NVRAM I/O context.
  * @param offset The offset within @p io for which to return a buffer pointer.
  * @param[out] ptr On success, will be initialized with a pointer to @p io's
@@ -82,10 +82,10 @@ bhnd_nvram_io_read(struct bhnd_nvram_io *io, size_t offset, void *buffer,
  * @param[out] navail The actual number of readable bytes, which may be greater
  * than @p nbytes. If this value is not required, a NULL pointer may be
  * provided.
- * 
+ *
  * @retval 0 success
- * @retval EIO if an input error occured reading @p io.
- * @retval ENODEV if @p io does not support direct access to its backing read 
+ * @retval EIO if an input error occurred reading @p io.
+ * @retval ENODEV if @p io does not support direct access to its backing read
  * buffer.
  * @retval ENXIO if the request exceeds the size of @p io.
  * @retval EFAULT if @p io requires I/O request alignment and @p offset or
@@ -98,9 +98,9 @@ bhnd_nvram_io_read_ptr(struct bhnd_nvram_io *io, size_t offset,
 	return (io->iops->read_ptr(io, offset, ptr, nbytes, navail));
 }
 
-/** 
+/**
  * Write @p nbytes to @p io at @p offset.
- * 
+ *
  * @param io NVRAM I/O context.
  * @param offset The offset within @p io at which to perform the write.
  * @param buffer Data to be written to @p io.
@@ -193,7 +193,7 @@ bhnd_nvram_io_setsize(struct bhnd_nvram_io *io, size_t size)
 /**
  * Free a previously allocated I/O context, releasing all associated
  * resources.
- * 
+ *
  * @param io The I/O context to be freed.
  */
 void