ARM: mvebu: Add pinctrl support to Armada 370 SoC

This commits adds the necessary device tree information to define the
compatible property for the pinctrl driver instance of Armada 370 SoC.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-370.dtsi

@@ -31,5 +31,10 @@
 				compatible = "marvell,armada-370-xp-system-controller";
 				reg = <0xd0018200 0x100>;
 		};
+
+		pinctrl {
+			compatible = "marvell,mv88f6710-pinctrl";
+			reg = <0xd0018000 0x38>;
+		};
 	};
 };