riscv: Fix Canaan Kendryte K210 device tree

Remove the clocks property from the cpu and clint nodes as these are
ignored. Also remove the clock-frequency property from the cpu nodes as
riscv relies on the timebase-frequency property.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

arch/riscv/boot/dts/canaan/k210.dtsi

@@ -38,8 +38,6 @@ cpu0: cpu@0 {
 			i-cache-block-size = <64>;
 			d-cache-size = <0x8000>;
 			d-cache-block-size = <64>;
-			clocks = <&sysctl K210_CLK_CPU>;
-			clock-frequency = <390000000>;
 			cpu0_intc: interrupt-controller {
 				#interrupt-cells = <1>;
 				interrupt-controller;
@@ -56,8 +54,6 @@ cpu1: cpu@1 {
 			i-cache-block-size = <64>;
 			d-cache-size = <0x8000>;
 			d-cache-block-size = <64>;
-			clocks = <&sysctl K210_CLK_CPU>;
-			clock-frequency = <390000000>;
 			cpu1_intc: interrupt-controller {
 				#interrupt-cells = <1>;
 				interrupt-controller;
@@ -101,7 +97,6 @@ clint0: clint@2000000 {
 			reg = <0x2000000 0xC000>;
 			interrupts-extended =  <&cpu0_intc 3 &cpu0_intc 7
 						&cpu1_intc 3 &cpu1_intc 7>;
-			clocks = <&sysctl K210_CLK_ACLK>;
 		};
 
 		plic0: interrupt-controller@c000000 {