ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt

ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt

commit a6c2a32ac83567f15e9af3dcbc73148ce68b2ced upstream.

The regmap_write in ssm4567_set_dai_fmt accidentally clears the
TDM_BCLKS field which was set earlier by ssm4567_set_tdm_slot.

This patch fixes it by using regmap_update_bits with proper mask.

Signed-off-by: Ben Zhang <benzh@chromium.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>