ARM: dts: mvebu: Add SPI1 pinctrl defines for Armada XP

This patch defines and uses common Armada XP pinctrl settings in
armada-xp.dtsi for the SPI1 interface (MPP13,14,16,17).
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm/boot/dts/armada-xp.dtsi

@@ -94,6 +94,8 @@ spi0: spi@10600 {
 			spi1: spi@10680 {
 				compatible = "marvell,armada-xp-spi",
 						"marvell,orion-spi";
+				pinctrl-0 = <&spi1_pins>;
+				pinctrl-names = "default";
 			};
 
 
@@ -362,6 +364,12 @@ spi0_pins: spi0-pins {
 		marvell,function = "spi0";
 	};
 
+	spi1_pins: spi1-pins {
+		marvell,pins = "mpp13", "mpp14",
+			       "mpp16", "mpp17";
+		marvell,function = "spi1";
+	};
+
 	uart2_pins: uart2-pins {
 		marvell,pins = "mpp42", "mpp43";
 		marvell,function = "uart2";