RT5645_I2S_BCLK_MS1 (reg 0x73 [5]) is reserverd in rt5645 and rt5650.
This function is move to TDM control. We can configure it by
snd_soc_dai_set_tdm_slot's slot_width parameter.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>