gpio/ep93xx: move driver to drivers/gpio

The GPIO driver should reside in drivers/gpio.

v3: Change Kconfig option to def_bool y
v2: Make the Kconfig symbol a silent option, dependent on ARCH_EP93XX
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/arm/mach-ep93xx/Makefile

 #
 # Makefile for the linux kernel.
 #
-obj-y			:= core.o clock.o dma-m2p.o gpio.o
+obj-y			:= core.o clock.o dma-m2p.o
 obj-m			:=
 obj-n			:=
 obj-			:=

drivers/gpio/Kconfig

@@ -86,6 +86,10 @@ config GPIO_IT8761E
 	help
 	  Say yes here to support GPIO functionality of IT8761E super I/O chip.
 
+config GPIO_EP93XX
+	def_bool y
+	depends on ARCH_EP93XX
+
 config GPIO_EXYNOS4
 	def_bool y
 	depends on CPU_EXYNOS4210

drivers/gpio/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_GPIO_ADP5520)	+= adp5520-gpio.o
 obj-$(CONFIG_GPIO_ADP5588)	+= adp5588-gpio.o
 obj-$(CONFIG_GPIO_BASIC_MMIO_CORE)	+= basic_mmio_gpio.o
 obj-$(CONFIG_GPIO_BASIC_MMIO)	+= basic_mmio_gpio.o
+obj-$(CONFIG_GPIO_EP93XX)	+= gpio-ep93xx.o
 obj-$(CONFIG_GPIO_EXYNOS4)	+= gpio-exynos4.o
 obj-$(CONFIG_GPIO_PLAT_SAMSUNG)	+= gpio-plat-samsung.o
 obj-$(CONFIG_GPIO_S5PC100)	+= gpio-s5pc100.o