UPSTREAM: ALSA: pcm: Allow 32 bit sample format in IEC958 channel status helper

UPSTREAM: ALSA: pcm: Allow 32 bit sample format in IEC958 channel status helper

Treat 32 bit sample width as if it was 24 bits when generating IEC958
channel status bits. On some platforms 24 sample width is problematic
and to get full 24 bit precision a 32 bit format, using only the 24
most significant bits, may have to be used.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit 4a462ce084d5beb92cfc68f53f88c035c82e6b59)

Change-Id: I26461c0d8b92bfc6547f81006dacb7a7b3068782
Signed-off-by: Chris Zhong <zyw@rock-chips.com>