iicbus: Move i2c sensors drivers into new sensor subdirectory

No reason that they should live directly under iicbus

Sponsored by:   Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D41913

sys/conf/files

@@ -1792,7 +1792,6 @@ dev/ida/ida.c			optional ida
 dev/ida/ida_disk.c		optional ida
 dev/ida/ida_pci.c		optional ida pci
 dev/iicbus/acpi_iicbus.c	optional acpi iicbus | acpi compat_linuxkpi
-dev/iicbus/htu21.c		optional htu21
 dev/iicbus/icee.c		optional icee
 dev/iicbus/if_ic.c		optional ic
 dev/iicbus/iic.c		optional iic
@@ -1808,8 +1807,6 @@ dev/iicbus/iicsmb.c		optional iicsmb				\
 dev/iicbus/iicoc.c		optional iicoc
 dev/iicbus/iicoc_fdt.c		optional iicoc fdt
 dev/iicbus/iicoc_pci.c		optional iicoc pci
-dev/iicbus/lm75.c		optional lm75
-dev/iicbus/max44009.c		optional max44009
 dev/iicbus/adc/ad7418.c		optional ad7418
 dev/iicbus/adc/ads111x.c	optional ads111x
 dev/iicbus/adc/pcf8591.c	optional pcf8591
@@ -1830,6 +1827,9 @@ dev/iicbus/rtc/pcf85063.c	optional pcf85063 iicbus fdt
 dev/iicbus/rtc/rtc8583.c	optional rtc8583
 dev/iicbus/rtc/rx8803.c		optional rx8803 iicbus fdt
 dev/iicbus/rtc/s35390a.c	optional s35390a
+dev/iicbus/sensor/htu21.c	optional htu21
+dev/iicbus/sensor/lm75.c	optional lm75
+dev/iicbus/sensor/max44009.c	optional max44009
 dev/iicbus/gpio/pcf8574.c	optional pcf8574
 dev/iicbus/gpio/tca64xx.c	optional tca64xx fdt gpio
 dev/iicbus/pmic/fan53555.c	optional fan53555 fdt | tcs4525 fdt

sys/conf/files.powerpc

@@ -40,14 +40,14 @@ dev/hwpmc/hwpmc_mpc7xxx.c	optional	hwpmc
 dev/hwpmc/hwpmc_power8.c	optional	hwpmc
 dev/hwpmc/hwpmc_powerpc.c	optional	hwpmc
 dev/hwpmc/hwpmc_ppc970.c	optional	hwpmc
-dev/iicbus/ds1631.c		optional	ds1631 powermac
-dev/iicbus/ds1775.c		optional	ds1775 powermac
-dev/iicbus/max6690.c		optional	max6690 powermac
 dev/iicbus/adc/ad7417.c		optional	ad7417 powermac
 dev/iicbus/ofw_iicbus.c		optional	iicbus aim
 dev/iicbus/ofw_iicbus_if.m	optional	iicbus aim
 dev/iicbus/pwm/adm1030.c	optional	powermac windtunnel | adm1030 powermac
 dev/iicbus/pwm/adt746x.c	optional        adt746x powermac
+dev/iicbus/sensor/ds1631.c	optional	ds1631 powermac
+dev/iicbus/sensor/ds1775.c	optional	ds1775 powermac
+dev/iicbus/sensor/max6690.c	optional	max6690 powermac
 dev/ipmi/ipmi.c			optional	ipmi
 dev/ipmi/ipmi_opal.c		optional	powernv ipmi
 dev/ice/if_ice_iflib.c		optional	ice pci powerpc64 | ice pci powerpc64le \

sys/modules/i2c/htu21/Makefile

@@ -1,5 +1,5 @@
 
-.PATH:	${SRCTOP}/sys/dev/iicbus
+.PATH:	${SRCTOP}/sys/dev/iicbus/sensor
 KMOD=	htu21
 SRCS=	htu21.c
 

sys/modules/i2c/max44009/Makefile

@@ -1,5 +1,5 @@
 
-.PATH:	${SRCTOP}/sys/dev/iicbus
+.PATH:	${SRCTOP}/sys/dev/iicbus/sensor
 KMOD=	max44009
 SRCS=	max44009.c
 

sys/modules/i2c/tmp461/Makefile

@@ -1,5 +1,5 @@
 
-.PATH:		${SRCTOP}/sys/dev/iicbus
+.PATH:		${SRCTOP}/sys/dev/iicbus/sensor
 KMOD		= tmp461
 SRCS		= tmp461.c bus_if.h device_if.h iicbus_if.h ofw_bus_if.h opt_platform.h