ARM: dts: iwg22d-sodimm: Add pinctl support for scif4

Adding pinctrl support for scif4 interface.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts

@@ -24,6 +24,16 @@ chosen {
 	};
 };
 
+&pfc {
+	scif4_pins: scif4 {
+		groups = "scif4_data_b";
+		function = "scif4";
+	};
+};
+
 &scif4 {
+	pinctrl-0 = <&scif4_pins>;
+	pinctrl-names = "default";
+
 	status = "okay";
 };