include/sound/cs4271.h:22:31: sparse: dubious one-bit signed bitfield

Hi Daniel,

FYI, there are new sparse warnings show up in

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git topic/cs4271
head:   d24f7344f8f3e6853d128d43b13424b6734d8211
commit: d24f7344f8f3e6853d128d43b13424b6734d8211 [37/37] ASoC: cs4271: add support for AMUTEB=BMUTEC feature

+ include/sound/cs4271.h:22:31: sparse: dubious one-bit signed bitfield

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0-DAY kernel build testing backend Open Source Technology Center
Fengguang Wu, Yuanhan Liu Intel Corporation