soundwire/ASoC: add fake BRA frame to align Intel DMA buffer size #7816

Job	Run time
Sparse check	3m 43s
GCC static -fanalyzer	4m 20s
GCC build X86_64 with W=1	3m 19s
GCC build X86_64 with W=1 allmodconfig	1m 48s
GCC build i386	2m 37s
GCC build arm64	22m 45s
GCC build arm64 allmodconfig	3m 8s
Clang build x86_64	6m 13s
GCC build X86_64	20m 15s
	1h 8m 8s

Provide feedback