drivers: clk: fix K230 clk driver #494

Job	Run time
checkpatch	1m 36s
kernel-build (linux-32ilp32, riscv32-unknown-linux-gnu-)	25m 4s
kernel-build (linux-64lp64, riscv64-unknown-linux-gnu-)	21m 58s
kernel-build (linux-64ilp32, riscv64-unknown-elf-)	31m 43s
kernel-build (linux-64lp64-dirty, riscv64-unknown-linux-gnu-)	17m 55s
kernel-build (linux-32ilp32-dirty, riscv32-unknown-linux-gnu-)	17m 10s
ruyi-qemu-64ilp32 (Image)	5m 20s
xt-qemu-64lp64 (c906fdv, linux-64lp64)	2m 20s
xt-qemu-32ilp32 (c907fdvm-rv32, linux-32ilp32)	2m 10s
xt-qemu-64lp64 (c906fdv, linux-64lp64-dirty)	2m 10s
xt-qemu-32ilp32 (c907fdvm-rv32, linux-32ilp32-dirty)	2m 10s
xt-qemu-64lp64 (c907fdvm-rv64, linux-64lp64)	2m 21s
xt-qemu-64lp64 (c907fdvm-rv64, linux-64lp64-dirty)	2m 17s
xt-qemu-64lp64 (c908v, linux-64lp64)	2m 20s
xt-qemu-64lp64 (c908v, linux-64lp64-dirty)	2m 11s
xt-qemu-64lp64 (c920, linux-64lp64)	2m 11s
xt-qemu-64lp64 (c920, linux-64lp64-dirty)	2m 12s
xt-qemu-64lp64 (c920v2, linux-64lp64)	2m 21s
xt-qemu-64lp64 (c920v2, linux-64lp64-dirty)	2m 6s
	2h 27m 35s

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