arm64: dts: renesas: r8a779a0: Add pinctrl device node

This patch adds the pinctrl device node for the R8A779A0 (V3U) SoC.
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Link: https://lore.kernel.org/r/20210112165948.31162-1-uli+renesas@fpond.euSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a779a0.dtsi

@@ -80,6 +80,15 @@ rwdt: watchdog@e6020000 {
 			status = "disabled";
 		};
 
+		pfc: pin-controller@e6050000 {
+			compatible = "renesas,pfc-r8a779a0";
+			reg = <0 0xe6050000 0 0x16c>, <0 0xe6050800 0 0x16c>,
+			      <0 0xe6058000 0 0x16c>, <0 0xe6058800 0 0x16c>,
+			      <0 0xe6060000 0 0x16c>, <0 0xe6060800 0 0x16c>,
+			      <0 0xe6068000 0 0x16c>, <0 0xe6068800 0 0x16c>,
+			      <0 0xe6069000 0 0x16c>, <0 0xe6069800 0 0x16c>;
+		};
+
 		cpg: clock-controller@e6150000 {
 			compatible = "renesas,r8a779a0-cpg-mssr";
 			reg = <0 0xe6150000 0 0x4000>;