ARM: dts: rmobile: Extract USB nodes on M3N

The USB nodes are not in Linux 4.17 DTs in M3N, pull them into U-Boot
specific DT extras until they hit mainline Linux, to make syncing of
DTs easier.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
diff --git a/arch/arm/dts/r8a77965.dtsi b/arch/arm/dts/r8a77965.dtsi
index 840512e..a47f079 100644
--- a/arch/arm/dts/r8a77965.dtsi
+++ b/arch/arm/dts/r8a77965.dtsi
@@ -645,46 +645,28 @@
 		};
 
 		ehci0: usb@ee080100 {
-			compatible = "generic-ehci";
 			reg = <0 0xee080100 0 0x100>;
-			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 703>;
-			phys = <&usb2_phy0>;
-			phy-names = "usb";
-			companion= <&ohci0>;
-			power-domains = <&sysc 32>;
-			resets = <&cpg 703>;
-			status = "disabled";
+			/* placeholder */
 		};
 
 		usb2_phy0: usb-phy@ee080200 {
-			compatible = "renesas,usb2-phy-r8a77965",
-				     "renesas,rcar-gen3-usb2-phy";
 			reg = <0 0xee080200 0 0x700>;
-			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 703>;
-			power-domains = <&sysc 32>;
-			resets = <&cpg 703>;
-			#phy-cells = <0>;
-			status = "disabled";
+			/* placeholder */
 		};
 
+		usb2_phy1: usb-phy@ee0a0200 {
+			reg = <0 0xee0a0200 0 0x700>;
+			/* placeholder */
+		};
+
 		ohci1: usb@ee0a0000 {
 			reg = <0 0xee0a0000 0 0x100>;
 			/* placeholder */
 		};
 
 		ehci1: usb@ee0a0100 {
-			compatible = "generic-ehci";
 			reg = <0 0xee0a0100 0 0x100>;
-			interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 702>;
-			phys = <&usb2_phy1>;
-			phy-names = "usb";
-			companion= <&ohci1>;
-			power-domains = <&sysc 32>;
-			resets = <&cpg 702>;
-			status = "disabled";
+			/* placeholder */
 		};
 
 		i2c0: i2c@e6500000 {
@@ -852,17 +834,6 @@
 			};
 		};
 
-		usb2_phy1: usb-phy@ee0a0200 {
-			compatible = "renesas,usb2-phy-r8a77965",
-				     "renesas,rcar-gen3-usb2-phy";
-			reg = <0 0xee0a0200 0 0x700>;
-			clocks = <&cpg CPG_MOD 702>;
-			power-domains = <&sysc 32>;
-			resets = <&cpg 702>;
-			#phy-cells = <0>;
-			status = "disabled";
-		};
-
 		sdhi0: sd@ee100000 {
 			compatible = "renesas,sdhi-r8a77965";
 			reg = <0 0xee100000 0 0x2000>;
@@ -919,14 +890,8 @@
 		};
 
 		xhci0: usb@ee000000 {
-			compatible = "renesas,xhci-r8a77965",
-				     "renesas,rcar-gen3-xhci";
 			reg = <0 0xee000000 0 0xc00>;
-			interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 328>;
-			power-domains = <&sysc 32>;
-			resets = <&cpg 328>;
-			status = "disabled";
+			/* placeholder */
 		};
 
 		wdt0: watchdog@e6020000 {