gpio: fix a build failure on KS8695 GPIO

I screwed up by compiling that driver for the machine rather
than the arch. Correcting this fixes the build error.

Cc: Grant Likely <grant.likely@secretlab.ca>
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/gpio/Makefile

@@ -18,7 +18,7 @@ obj-$(CONFIG_ARCH_DAVINCI)	+= gpio-davinci.o
 obj-$(CONFIG_GPIO_EP93XX)	+= gpio-ep93xx.o
 obj-$(CONFIG_GPIO_IT8761E)	+= gpio-it8761e.o
 obj-$(CONFIG_GPIO_JANZ_TTL)	+= gpio-janz-ttl.o
-obj-$(CONFIG_MACH_KS8695)	+= gpio-ks8695.o
+obj-$(CONFIG_ARCH_KS8695)	+= gpio-ks8695.o
 obj-$(CONFIG_GPIO_LANGWELL)	+= gpio-langwell.o
 obj-$(CONFIG_ARCH_LPC32XX)	+= gpio-lpc32xx.o
 obj-$(CONFIG_GPIO_MAX730X)	+= gpio-max730x.o