ARM: dts: rmobile: Extract SCIF2 node on E3 Ebisu

The SCIF2 node is not in Linux 4.17 DTs on E3, pull it into U-Boot
specific DT extras until it hits mainline Linux, to make syncing of
DTs easier.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master

arch/arm/dts/r8a77990-ebisu-u-boot.dts

@@ -77,6 +77,19 @@
 };
 
 &pfc {
+	pinctrl-0 = <&scif_clk_pins>;
+	pinctrl-names = "default";
+
+	scif2_pins: scif2 {
+		groups = "scif2_data_a";
+		function = "scif2";
+	};
+
+	scif_clk_pins: scif_clk {
+		groups = "scif_clk_a";
+		function = "scif_clk";
+	};
+
 	sdhi0_pins: sd0 {
 		groups = "sdhi0_data4", "sdhi0_ctrl";
 		function = "sdhi0";
@@ -114,6 +127,12 @@
 	};
 };
 
+&scif2 {
+	pinctrl-0 = <&scif2_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &sdhi0 {
 	/* full size SD */
 	pinctrl-0 = <&sdhi0_pins>;

arch/arm/dts/r8a77990-ebisu.dts

@@ -122,9 +122,6 @@
 };
 
 &pfc {
-	pinctrl-0 = <&scif_clk_pins>;
-	pinctrl-names = "default";
-
 	avb_pins: avb {
 		mux {
 			groups = "avb_link", "avb_mii";
@@ -132,16 +129,6 @@
 		};
 	};
 
-	scif2_pins: scif2 {
-		groups = "scif2_data_a";
-		function = "scif2";
-	};
-
-	scif_clk_pins: scif_clk {
-		groups = "scif_clk_a";
-		function = "scif_clk";
-	};
-
 	usb0_pins: usb0 {
 		groups = "usb0";
 		function = "usb0";
@@ -208,8 +195,5 @@
 };
 
 &scif2 {
-	pinctrl-0 = <&scif2_pins>;
-	pinctrl-names = "default";
-
 	status = "okay";
 };