MIPS: AR7: Implement gpiolib

This patch implements gpiolib for the AR7 SoC.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/816/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8741671..db0a853 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -41,7 +41,7 @@
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_ZBOOT_UART16550
-	select GENERIC_GPIO
+	select ARCH_REQUIRE_GPIOLIB
 	select GCD
 	select VLYNQ
 	help