arm: marvell: Extract kirkwood gpio functions into new common file gpio.c

This makes is possible to use those gpio functions from other MVEBU SoC's as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Luka Perkov <luka@openwrt.org>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
diff --git a/board/Marvell/openrd/openrd.c b/board/Marvell/openrd/openrd.c
index 78ebb64..52dd083 100644
--- a/board/Marvell/openrd/openrd.c
+++ b/board/Marvell/openrd/openrd.c
@@ -27,9 +27,9 @@
 	 * There are maximum 64 gpios controlled through 2 sets of registers
 	 * the  below configuration configures mainly initial LED status
 	 */
-	kw_config_gpio(OPENRD_OE_VAL_LOW,
-			OPENRD_OE_VAL_HIGH,
-			OPENRD_OE_LOW, OPENRD_OE_HIGH);
+	mvebu_config_gpio(OPENRD_OE_VAL_LOW,
+			  OPENRD_OE_VAL_HIGH,
+			  OPENRD_OE_LOW, OPENRD_OE_HIGH);
 
 	/* Multi-Purpose Pins Functionality configuration */
 	static const u32 kwmpp_config[] = {