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/karo/tk71/tk71.c b/board/karo/tk71/tk71.c
index e877aa3..7aec5f9 100644
--- a/board/karo/tk71/tk71.c
+++ b/board/karo/tk71/tk71.c
@@ -26,9 +26,9 @@
 	 * There are maximum 64 gpios controlled through 2 sets of registers
 	 * the  below configuration configures mainly initial LED status
 	 */
-	kw_config_gpio(TK71_OE_VAL_LOW,
-			TK71_OE_VAL_HIGH,
-			TK71_OE_LOW, TK71_OE_HIGH);
+	mvebu_config_gpio(TK71_OE_VAL_LOW,
+			  TK71_OE_VAL_HIGH,
+			  TK71_OE_LOW, TK71_OE_HIGH);
 
 	/* Multi-Purpose Pins Functionality configuration */
 	static const u32 kwmpp_config[] = {