ARM: orion5x: add standard pinctrl configs for sata0 and sata1

Several platforms will most likely use similar pinctrl configurations
for SATA0 and SATA1, so we declare those common configurations in the
Orion5x DT file.

Signed-off-by: Thomas Petazzoni <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]
Acked-by: Sebastian Hesselbarth <[e-mail]>
Signed-off-by: Jason Cooper <[e-mail]>

arch/arm/boot/dts/orion5x-mv88f5182.dtsi

···
 			pinctrl: pinctrl@10000 {
 				compatible = "marvell,88f5182-pinctrl";
 				reg = <0x10000 0x8>, <0x10050 0x4>;
+
+				pmx_sata0: pmx-sata0 {
+					marvell,pins = "mpp12", "mpp14";
+					marvell,function = "sata0";
+				};
+
+				pmx_sata1: pmx-sata1 {
+					marvell,pins = "mpp13", "mpp15";
+					marvell,function = "sata1";
+				};
 			};
 
 			core_clk: core-clocks@10030 {