arm64: dts: renesas: rzg2ul-smarc: Add scif0 and audio clk pins

Add scif0 and audio clk pins to soc pinctrl dtsi and drop deleting
the pinctrl-0 and pinctrl-names properties for scif0 node so that
we now actually make use of these properties for scif0.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220402081328.26292-3-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts

@@ -8,6 +8,7 @@
 /dts-v1/;
 #include "r9a07g043.dtsi"
 #include "rzg2ul-smarc-som.dtsi"
+#include "rzg2ul-smarc-pinfunction.dtsi"
 #include "rz-smarc-common.dtsi"
 
 / {
@@ -73,11 +74,6 @@ &phyrst {
 	status = "disabled";
 };
 
-&scif0 {
-	/delete-property/ pinctrl-0;
-	/delete-property/ pinctrl-names;
-};
-
 &sdhi1 {
 	/delete-property/ pinctrl-0;
 	/delete-property/ pinctrl-1;

arch/arm64/boot/dts/renesas/rzg2ul-smarc-pinfunction.dtsi

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G2UL SMARC pincontrol parts
+ *
+ * Copyright (C) 2022 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+&pinctrl {
+	pinctrl-0 = <&sound_clk_pins>;
+	pinctrl-names = "default";
+
+	scif0_pins: scif0 {
+		pinmux = <RZG2L_PORT_PINMUX(6, 4, 6)>, /* TxD */
+			 <RZG2L_PORT_PINMUX(6, 3, 6)>; /* RxD */
+	};
+
+	sound_clk_pins: sound_clk {
+		pins = "AUDIO_CLK1", "AUDIO_CLK2";
+		input-enable;
+	};
+};