arm64: dts: ulcb-kf: enable SCIF1

This supports SCIF1 on ULCB Kingfisher board
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/ulcb-kf.dtsi

@@ -12,6 +12,7 @@
 / {
 	aliases {
 		serial1 = &hscif0;
+		serial2 = &scif1;
 	};
 };
 
@@ -28,4 +29,17 @@ hscif0_pins: hscif0 {
 		groups = "hscif0_data", "hscif0_ctrl";
 		function = "hscif0";
 	};
+
+	scif1_pins: scif1 {
+		groups = "scif1_data_b", "scif1_ctrl";
+		function = "scif1";
+	};
+};
+
+&scif1 {
+	pinctrl-0 = <&scif1_pins>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+
+	status = "okay";
 };