MIPS: Au1000: convert to using gpiolib

This patch converts the GPIO board code to use gpiolib.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig
index 7f8ef13..2fc5c13 100644
--- a/arch/mips/alchemy/Kconfig
+++ b/arch/mips/alchemy/Kconfig
@@ -135,3 +135,4 @@
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_APM_EMULATION
 	select GENERIC_HARDIRQS_NO__DO_IRQ
+	select ARCH_REQUIRE_GPIOLIB