SoundWire: Call Prepare command for Simplified_CP_SM #8087

Job	Run time
GCC build i386	16m 38s
GCC build X86_64	18m 54s
Clang build x86_64	5m 1s
GCC static -fanalyzer	4m 36s
GCC build arm64	22m 36s
Sparse check	3m 21s
GCC build X86_64 with W=1 allmodconfig	2m 6s
GCC build X86_64 with W=1	3m 19s
GCC build arm64 allmodconfig	2m 21s
	1h 18m 52s

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