arm64: dts: renesas: rzg2l-smarc: Add scif0 pins

Add scif0 pins in pinctrl node and update the scif0 node
to include pinctrl properties.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210727112328.18809-5-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi

@@ -6,6 +6,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
 
 / {
 	aliases {
@@ -22,6 +23,15 @@ &extal_clk {
 	clock-frequency = <24000000>;
 };
 
+&pinctrl {
+	scif0_pins: scif0 {
+		pinmux = <RZG2L_PORT_PINMUX(38, 0, 1)>,	/* TxD */
+			 <RZG2L_PORT_PINMUX(38, 1, 1)>;	/* RxD */
+	};
+};
+
 &scif0 {
+	pinctrl-0 = <&scif0_pins>;
+	pinctrl-names = "default";
 	status = "okay";
 };