ASoC: Intel: sof-rt5682: support bclk as PLL source on rt5682s #38

Job	Run time
GCC static -fanalyzer	5m 2s
Clang build x86_64	3m 50s
GCC build arm64	16m 50s
GCC build arm64 allmodconfig	1m 31s
GCC build i386	14m 35s
GCC build X86_64	16m 45s
GCC build X86_64 with W=1	2m 41s
GCC build X86_64 with W=1 allmodconfig	1m 28s
Sparse check	2m 49s
	1h 5m 31s

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