ARM: dts: renesas: Synchronize R-Car R8A77970 V3M DTs with Linux 6.5.3

Synchronize R-Car R8A77970 V3M DTs with Linux 6.5.3,
commit 238589d0f7b421aae18c5704dc931595019fa6c7 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/arch/arm/dts/r8a77970-eagle.dts b/arch/arm/dts/r8a77970-eagle.dts
index 004a5ea..405404c 100644
--- a/arch/arm/dts/r8a77970-eagle.dts
+++ b/arch/arm/dts/r8a77970-eagle.dts
@@ -287,6 +287,9 @@
 };
 
 &pfc {
+	pinctrl-0 = <&scif_clk_pins>;
+	pinctrl-names = "default";
+
 	avb_pins: avb0 {
 		groups = "avb0_mdio", "avb0_rgmii", "avb0_txcrefclk";
 		function = "avb0";
@@ -316,6 +319,11 @@
 		groups = "scif0_data";
 		function = "scif0";
 	};
+
+	scif_clk_pins: scif_clk {
+		groups = "scif_clk_b";
+		function = "scif_clk";
+	};
 };
 
 &rpc {
@@ -391,3 +399,7 @@
 
 	status = "okay";
 };
+
+&scif_clk {
+	clock-frequency = <14745600>;
+};