Revert r299739. That did not make it better.

Instead disconnect gpiokeys from the build until it's fixed and buildable;
the SUBDIR list was not ordered properly anyway ;-)

sys/modules/gpio/Makefile

@@ -25,6 +25,6 @@
 # SUCH DAMAGE.
 #
 
-SUBDIR = gpiobus gpioiic gpioled gpiokeys
+SUBDIR = gpiobus gpioiic gpioled
 
 .include <bsd.subdir.mk>

sys/modules/gpio/gpiokeys/Makefile

@@ -5,7 +5,7 @@
 .PATH:	${.CURDIR}/../../../dev/gpio/
 
 KMOD=	gpiokeys
-SRCS=	gpiokeys.c gpiokeys_codes.c ofw_gpiobus.c
+SRCS=	gpiokeys.c gpiokeys_codes.c
 SRCS+=	bus_if.h device_if.h gpio_if.h ofw_bus_if.h
 SRCS+=	opt_platform.h opt_kbd.h