ASoC: Intel: KMB: Support IEC958 encoded PCM format

Support ALSA IEC958 plugin for KeemBay I2S driver.
Bit manipulation needed as IEC958 format supported by ADV7511 HDMI chip
is not compatible with the ALSA IEC958 plugin format.

Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Link: https://lore.kernel.org/r/20210204014258.10197-5-jee.heng.sia@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>