Audio support for WCL #7530

Job	Run time
Sparse check	4m 7s
GCC static -fanalyzer	4m 14s
GCC build i386	15m 36s
GCC build X86_64	17m 48s
GCC build arm64	19m 31s
GCC build X86_64 with W=1 allmodconfig	1m 33s
GCC build X86_64 with W=1	2m 40s
Clang build x86_64	4m 6s
GCC build arm64 allmodconfig	1m 26s
	1h 11m 1s

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