[ARM] Orion: enable KEYBOARD_GPIO in the defconfg

Enable KEYBOARD_GPIO in the Orion defconfig because a number of Orion
devices, such as the HP mv2120, define gpio-keys buttons.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/configs/orion5x_defconfig b/arch/arm/configs/orion5x_defconfig
index 9578b5d..f2f7a54 100644
--- a/arch/arm/configs/orion5x_defconfig
+++ b/arch/arm/configs/orion5x_defconfig
@@ -757,7 +757,14 @@
 #
 # Input Device Drivers
 #
-# CONFIG_INPUT_KEYBOARD is not set
+CONFIG_INPUT_KEYBOARD=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+CONFIG_KEYBOARD_GPIO=y
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_INPUT_JOYSTICK is not set
 # CONFIG_INPUT_TABLET is not set