ASoC: sdw_utils: subtract the endpoint that is not present #8078

Job	Run time
GCC build X86_64 with W=1	3m 14s
GCC build X86_64	20m 12s
Sparse check	3m 26s
GCC static -fanalyzer	4m 16s
GCC build i386	16m 48s
GCC build arm64 allmodconfig	1m 59s
Clang build x86_64	4m 49s
GCC build X86_64 with W=1 allmodconfig	2m 10s
GCC build arm64	21m 56s
	1h 18m 50s

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