arm: allwinner: Add pnp info to aw_rtc and compile it as module too

MFC after:	1 month

sys/arm/allwinner/aw_rtc.c

@@ -185,6 +185,8 @@ static devclass_t aw_rtc_devclass;
 
 EARLY_DRIVER_MODULE(aw_rtc, simplebus, aw_rtc_driver, aw_rtc_devclass, 0, 0,
     BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
+MODULE_VERSION(aw_rtc, 1);
+SIMPLEBUS_PNP_INFO(compat_data);
 
 static int
 aw_rtc_probe(device_t dev)

sys/modules/allwinner/Makefile

@@ -2,6 +2,7 @@
 # Build modules specific to Allwinner.
 
 SUBDIR = \
+	aw_rtc \
 	aw_sid \
 	aw_spi \
 	aw_thermal \

sys/modules/allwinner/aw_rtc/Makefile

@@ -0,0 +1,15 @@
+# $FreeBSD$
+
+.PATH: ${SRCTOP}/sys/arm/allwinner
+
+KMOD=	aw_rtc
+SRCS=	aw_rtc.c
+
+SRCS+=	\
+	bus_if.h \
+	clknode_if.h \
+	device_if.h \
+	ofw_bus_if.h \
+	spibus_if.h \
+
+.include <bsd.kmod.mk>