arm64: dts: renesas: Fix pin controller node names

Align all pin controller node names with the expectations of the DT
bindings in Documentation/devicetree/bindings/pinctrl/pinctrl.yaml.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/09a09c8ac9cb1a11b859c1ab9d9eae84cfefb1bb.1639666967.git.geert+renesas@glider.be

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

@@ -87,7 +87,7 @@ rwdt: watchdog@e6020000 {
 			status = "disabled";
 		};
 
-		pfc: pin-controller@e6050000 {
+		pfc: pinctrl@e6050000 {
 			compatible = "renesas,pfc-r8a779a0";
 			reg = <0 0xe6050000 0 0x16c>, <0 0xe6050800 0 0x16c>,
 			      <0 0xe6058000 0 0x16c>, <0 0xe6058800 0 0x16c>,

arch/arm64/boot/dts/renesas/r9a07g044.dtsi

@@ -633,7 +633,7 @@ sysc: system-controller@11020000 {
 			status = "disabled";
 		};
 
-		pinctrl: pin-controller@11030000 {
+		pinctrl: pinctrl@11030000 {
 			compatible = "renesas,r9a07g044-pinctrl";
 			reg = <0 0x11030000 0 0x10000>;
 			gpio-controller;