[MIPS] Add generic GPIO to Au1x00

This patch adds support for the generic GPIO API to Au1x00 boards. It requires
the generic GPIO patch for MIPS boards by Yoichi Yuasa. Now there is a MIPS
target using it, can you queue these patchset for 2.6.22 ? Thank you very
much in advance.

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 1f2f7a9..37977db 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -861,6 +861,7 @@
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select GENERIC_HARDIRQS_NO__DO_IRQ
 	select SYS_SUPPORTS_KGDB
+	select GENERIC_GPIO
 
 config SWAP_IO_SPACE
 	bool