Add module build stuff for gpioths(4), a driver for DHT11/DHT22 sensors.

sys/modules/gpio/Makefile

@@ -25,7 +25,7 @@
 # SUCH DAMAGE.
 #
 
-SUBDIR = gpiobus gpioiic gpioled gpiospi
+SUBDIR = gpiobus gpioiic gpioled gpiospi gpioths
 
 .if !empty(OPT_FDT)
 SUBDIR += gpiokeys gpiopps

sys/modules/gpio/gpioths/Makefile

@@ -0,0 +1,19 @@
+# $FreeBSD$
+#
+
+.PATH:	${SRCTOP}/sys/dev/gpio/
+
+KMOD=	gpioths
+SRCS=	gpioths.c
+
+SRCS+=	\
+	bus_if.h \
+	device_if.h \
+	gpio_if.h \
+	gpiobus_if.h \
+	ofw_bus_if.h \
+	opt_platform.h \
+
+CFLAGS+=  -I. -I${SRCTOP}/sys/dev/gpio/
+
+.include <bsd.kmod.mk>