arm64: dts: r8a7796: salvator-x: add SCIF1 (DEBUG1)

Enables the SCIF hooked up to the DEBUG1 connector.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a7796-salvator-x.dts

@@ -18,6 +18,7 @@ / {
 
 	aliases {
 		serial0 = &scif2;
+		serial1 = &scif1;
 		ethernet0 = &avb;
 	};
 
@@ -113,6 +114,11 @@ avb_pins: avb {
 		function = "avb";
 	};
 
+	scif1_pins: scif1 {
+		groups = "scif1_data_a", "scif1_ctrl";
+		function = "scif1";
+	};
+
 	scif2_pins: scif2 {
 		groups = "scif2_data_a";
 		function = "scif2";
@@ -228,6 +234,14 @@ &sdhi3 {
 	status = "okay";
 };
 
+&scif1 {
+	pinctrl-0 = <&scif1_pins>;
+	pinctrl-names = "default";
+
+	uart-has-rtscts;
+	status = "okay";
+};
+
 &scif2 {
 	pinctrl-0 = <&scif2_pins>;
 	pinctrl-names = "default";