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/r8a7796.dtsi b/arch/arm/dts/r8a7796.dtsi
index cdf7848..d5e2f4a 100644
--- a/arch/arm/dts/r8a7796.dtsi
+++ b/arch/arm/dts/r8a7796.dtsi
@@ -1775,7 +1775,7 @@
 				<0 0xec5a0000 0 0x100>,  /* ADG */
 				<0 0xec540000 0 0x1000>, /* SSIU */
 				<0 0xec541000 0 0x280>,  /* SSI */
-				<0 0xec740000 0 0x200>;  /* Audio DMAC peri peri*/
+				<0 0xec760000 0 0x200>;  /* Audio DMAC peri peri*/
 			reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
 
 			clocks = <&cpg CPG_MOD 1005>,
@@ -2162,17 +2162,6 @@
 					dma-names = "rx", "tx";
 				};
 			};
-
-			ports {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				port@0 {
-					reg = <0>;
-				};
-				port@1 {
-					reg = <1>;
-				};
-			};
 		};
 
 		audma0: dma-controller@ec700000 {