AMD SOF Soundwire generic machine driver code refactor #6833

Job	Run time
Sparse check	3m 9s
Clang build x86_64	4m 15s
GCC static -fanalyzer	4m 30s
GCC build arm64	17m 36s
GCC build i386	15m 31s
GCC build X86_64	19m 1s
GCC build X86_64 with W=1	3m 5s
GCC build arm64 allmodconfig	1m 59s
GCC build X86_64 with W=1 allmodconfig	1m 59s
	1h 11m 5s

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