[MIPS] rbtx4938: Add generic GPIO support

GPIO 0..15 are for TX4938 PIO pins, GPIO 16..18 are for FPGA-driven
chipselect signals for SPI devices.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 24661d60bc8f..823a6285c55a 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -660,6 +660,7 @@ config TOSHIBA_RBTX4938
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_KGDB
         select GENERIC_HARDIRQS_NO__DO_IRQ
+        select GENERIC_GPIO
         help
           This Toshiba board is based on the TX4938 processor. Say Y here to
           support this machine type