Add module makefiles for pwm.

sys/modules/Makefile

@@ -299,6 +299,7 @@ SUBDIR=	\
 	${_pst} \
 	pty  \
 	puc \
+	pwm \
 	${_qlxge} \
 	${_qlxgb} \
 	${_qlxgbe} \

sys/modules/pwm/Makefile

@@ -0,0 +1,9 @@
+# $FreeBSD$
+
+# Modules for dev/pwm drivers.
+
+SUBDIR = \
+	pwmbus \
+	pwmc \
+	
+.include <bsd.subdir.mk>

sys/modules/pwm/pwmbus/Makefile

@@ -0,0 +1,20 @@
+# $FreeBSD$
+
+.PATH:	${SRCTOP}/sys/dev/pwm
+
+KMOD=	pwmbus
+SRCS=	pwmbus.c
+
+.if !empty(OPT_FDT)
+SRCS+=	ofw_pwm.c ofw_bus_if.h
+.endif
+
+# Generated files...
+SRCS+=	\
+	bus_if.h \
+	device_if.h \
+	opt_platform.h \
+	pwmbus_if.c \
+	pwmbus_if.h \
+
+.include <bsd.kmod.mk>

sys/modules/pwm/pwmc/Makefile

@@ -0,0 +1,18 @@
+# $FreeBSD$
+
+.PATH:	${SRCTOP}/sys/dev/pwm
+KMOD=	pwmc
+SRCS=	pwmc.c
+
+# Generated files...
+SRCS+=	\
+	bus_if.h \
+	device_if.h \
+	opt_platform.h \
+	pwmbus_if.h \
+
+.if !empty(OPT_FDT)
+SRCS+=	ofw_bus_if.h
+.endif
+
+.include <bsd.kmod.mk>