arm64: dts: r8a7796: Add Cortex-A53 CPU cores

This patch adds Cortex-A53 CPU cores of R8A7796 SoC, and sets a total of
6 cores (2 x Cortex-A57 + 4 x Cortex-A53).

Based on a patch by Takeshi Kihara in the BSP.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a7796.dtsi

@@ -55,6 +55,42 @@ a57_1: cpu@1 {
 			enable-method = "psci";
 		};
 
+		a53_0: cpu@100 {
+			compatible = "arm,cortex-a53", "arm,armv8";
+			reg = <0x100>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A7796_PD_CA53_CPU0>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+		};
+
+		a53_1: cpu@101 {
+			compatible = "arm,cortex-a53","arm,armv8";
+			reg = <0x101>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A7796_PD_CA53_CPU1>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+		};
+
+		a53_2: cpu@102 {
+			compatible = "arm,cortex-a53","arm,armv8";
+			reg = <0x102>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A7796_PD_CA53_CPU2>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+		};
+
+		a53_3: cpu@103 {
+			compatible = "arm,cortex-a53","arm,armv8";
+			reg = <0x103>;
+			device_type = "cpu";
+			power-domains = <&sysc R8A7796_PD_CA53_CPU3>;
+			next-level-cache = <&L2_CA53>;
+			enable-method = "psci";
+		};
+
 		L2_CA57: cache-controller-0 {
 			compatible = "cache";
 			power-domains = <&sysc R8A7796_PD_CA57_SCU>;
@@ -115,7 +151,7 @@ gic: interrupt-controller@f1010000 {
 			      <0x0 0xf1040000 0 0x20000>,
 			      <0x0 0xf1060000 0 0x20000>;
 			interrupts = <GIC_PPI 9
-					(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
 			clocks = <&cpg CPG_MOD 408>;
 			clock-names = "clk";
 			power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
@@ -124,13 +160,13 @@ gic: interrupt-controller@f1010000 {
 		timer {
 			compatible = "arm,armv8-timer";
 			interrupts = <GIC_PPI 13
-					(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
 				     <GIC_PPI 14
-					(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
 				     <GIC_PPI 11
-					(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
 				     <GIC_PPI 10
-					(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
+					(GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>;
 		};
 
 		wdt0: watchdog@e6020000 {