ARM: dts: rzg1: Add reset control properties for display

Add reset control properties to the devices node for the Display Units
on all supported RZ/G1 SoCs.  Note that on these SoCs, there is only a
single reset for all DU channels.

Join the clocks lines while at it, to increase uniformity.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200218133019.22299-3-geert+renesas@glider.be

arch/arm/boot/dts/r8a7743.dtsi

@@ -1669,9 +1669,10 @@ du: display@feb00000 {
 			reg = <0 0xfeb00000 0 0x40000>;
 			interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 724>,
-				 <&cpg CPG_MOD 723>;
+			clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>;
 			clock-names = "du.0", "du.1";
+			resets = <&cpg 724>;
+			reset-names = "du.0";
 			status = "disabled";
 
 			ports {

arch/arm/boot/dts/r8a7744.dtsi

@@ -1655,9 +1655,10 @@ du: display@feb00000 {
 			reg = <0 0xfeb00000 0 0x40000>;
 			interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 724>,
-				 <&cpg CPG_MOD 723>;
+			clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>;
 			clock-names = "du.0", "du.1";
+			resets = <&cpg 724>;
+			reset-names = "du.0";
 			status = "disabled";
 
 			ports {

arch/arm/boot/dts/r8a7745.dtsi

@@ -1510,6 +1510,8 @@ du: display@feb00000 {
 				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>;
 			clock-names = "du.0", "du.1";
+			resets = <&cpg 724>;
+			reset-names = "du.0";
 			status = "disabled";
 
 			ports {

arch/arm/boot/dts/r8a77470.dtsi

@@ -942,9 +942,10 @@ du: display@feb00000 {
 			reg = <0 0xfeb00000 0 0x40000>;
 			interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 724>,
-				 <&cpg CPG_MOD 723>;
+			clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>;
 			clock-names = "du.0", "du.1";
+			resets = <&cpg 724>;
+			reset-names = "du.0";
 			status = "disabled";
 
 			ports {