arm64: dts: r8a7796: Add pinctrl device node

This patch adds pinctrl device node for R8A7796 SoC.
Signed-off-by: NTakeshi Kihara <takeshi.kihara.df@renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a7796.dtsi

@@ -107,6 +107,11 @@
 			status = "disabled";
 		};
 
+		pfc: pin-controller@e6060000 {
+			compatible = "renesas,pfc-r8a7796";
+			reg = <0 0xe6060000 0 0x50c>;
+		};
+
 		cpg: clock-controller@e6150000 {
 			compatible = "renesas,r8a7796-cpg-mssr";
 			reg = <0 0xe6150000 0 0x1000>;