arm64: dts: allwinner: h6: Add clock to CPU cores

The ARM CPU cores are fed by the CPU clock from the CCU. Add a
reference to the clock for each CPU core, along with the clock
transition latency.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi

@@ -25,6 +25,8 @@ cpu0: cpu@0 {
 			device_type = "cpu";
 			reg = <0>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
+			clock-latency-ns = <244144>; /* 8 32k periods */
 		};
 
 		cpu1: cpu@1 {
@@ -32,6 +34,8 @@ cpu1: cpu@1 {
 			device_type = "cpu";
 			reg = <1>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
+			clock-latency-ns = <244144>; /* 8 32k periods */
 		};
 
 		cpu2: cpu@2 {
@@ -39,6 +43,8 @@ cpu2: cpu@2 {
 			device_type = "cpu";
 			reg = <2>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
+			clock-latency-ns = <244144>; /* 8 32k periods */
 		};
 
 		cpu3: cpu@3 {
@@ -46,6 +52,8 @@ cpu3: cpu@3 {
 			device_type = "cpu";
 			reg = <3>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
+			clock-latency-ns = <244144>; /* 8 32k periods */
 		};
 	};