drm/i915/xe3lpd: Map POWER_DOMAIN_AUDIO_PLAYBACK to DC_off #7429

Job	Run time
GCC static -fanalyzer	2m 17s
Sparse check	3m 49s
GCC build X86_64 with W=1 allmodconfig	1m 27s
GCC build X86_64 with W=1	2m 29s
GCC build arm64	19m 0s
GCC build arm64 allmodconfig	2m 6s
GCC build i386	15m 25s
GCC build X86_64	18m 54s
Clang build x86_64	4m 27s
	1h 9m 54s

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