ARM: dts: rmobile: Synchronize Gen3 DTs with Linux 5.2

Backport and squash below Linux 5.2 commits for R-Car Gen3:

Commit id       * Summary line
6fffb98645e67b5   arm64: dts: renesas: r8a77990: ebisu: Add GPIO expander
b068ed6efe6244d   arm64: dts: renesas: r8a77990: Fix SPDX license identifier style
96c25882252704d ! arm64: dts: renesas: r8a7796: remove unneeded sound #address/size-cells
71ac75dffdae2f8   arm64: dts: renesas: r8a77990: ebisu: Enable LVDS1 encoder
9a0ff5c727b60a3   arm64: dts: renesas: r8a77995: draak: Enable LVDS1 encoder
9130c15829846fa   arm64: dts: renesas: ebisu: Fix adv7482 hexadecimal register address
191f7dcd1f5ea1f   arm64: dts: renesas: r8a77965: add SSIU support for sound
a8f6110e64422d5   arm64: dts: renesas: ebisu: Enable VIN5
4162aa9db3d4469   arm64: dts: renesas: r8a77995: draak: Enable CAN0, CAN1
af965ba3248edde   arm64: dts: renesas: r8a77990: Remove invalid compatible value for CSI40
1f4c123a98098cc   arm64: dts: renesas: r8a77990-ebisu: Add BD9571 PMIC
474706117c2baa6   arm64: dts: renesas: ebisu: Add PMIC DDR0 Backup Power config
e2fa79de7ecbef4   arm64: dts: renesas: Update Ebisu and Draak bootargs
de8e8daaf7190ef   arm64: dts: renesas: salvator-common: Sort node label
05f1d882d28b871   arm64: dts: renesas: r8a77995: draak: Fix EthernetAVB phy mode to rgmii
7a516e49d975311   arm64: dts: renesas: use extended audio dmac register
e3414b8c45afa5c   arm64: dts: renesas: salvator-common: Add GPIO keys support
720066d17c973fd   arm64: dts: renesas: r8a7795: Add CMT device nodes
99cb95103e2d058   arm64: dts: renesas: r8a77965: Add CMT device nodes
28a5c61b5136d58   arm64: dts: renesas: r8a77990: Add CMT device nodes
32d622f3290b2a1   arm64: dts: renesas: r8a77965: Remove reg-names of display node

(*) Patch id mismatch between Linux and U-Boot commit.
[!] Dropped changes in arch/arm64/boot/dts/renesas/r8a7796-salvator-xs.dts,
    since the file doesn't exist in the U-Boot tree.

Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
diff --git a/arch/arm/dts/r8a77995-draak.dts b/arch/arm/dts/r8a77995-draak.dts
index db2bed1..a7dc11e 100644
--- a/arch/arm/dts/r8a77995-draak.dts
+++ b/arch/arm/dts/r8a77995-draak.dts
@@ -20,7 +20,7 @@
 	};
 
 	chosen {
-		bootargs = "ignore_loglevel";
+		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
 		stdout-path = "serial0:115200n8";
 	};
 
@@ -168,7 +168,6 @@
 	pinctrl-names = "default";
 	renesas,no-ether-link;
 	phy-handle = <&phy0>;
-	phy-mode = "rgmii-txid";
 	status = "okay";
 
 	phy0: ethernet-phy@0 {
@@ -179,6 +178,18 @@
 	};
 };
 
+&can0 {
+	pinctrl-0 = <&can0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&can1 {
+	pinctrl-0 = <&can1_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &du {
 	pinctrl-0 = <&du_pins>;
 	pinctrl-names = "default";
@@ -356,6 +367,13 @@
 };
 
 &lvds1 {
+	/*
+	 * Even though the LVDS1 output is not connected, the encoder must be
+	 * enabled to supply a pixel clock to the DU for the DPAD output when
+	 * LVDS0 is in use.
+	 */
+	status = "okay";
+
 	clocks = <&cpg CPG_MOD 727>,
 		 <&x12_clk>,
 		 <&extal_clk>;
@@ -375,6 +393,16 @@
 		};
 	};
 
+	can0_pins: can0 {
+		groups = "can0_data_a";
+		function = "can0";
+	};
+
+	can1_pins: can1 {
+		groups = "can1_data_a";
+		function = "can1";
+	};
+
 	du_pins: du {
 		groups = "du_rgb888", "du_sync", "du_disp", "du_clk_out_0";
 		function = "du";