alsa-util/sink/source: Add infrastructure for supported sample formats

alsa-util/sink/source: Add infrastructure for supported sample formats

There has been a function to get supported sample rates from alsa and
an array for it in userdata of each module-alsa-sink/source. Similarly,
this patch adds a function to get supported sample formats(bitdepth)
from alsa and an array for it to each userdata of the modules.

[Version] 11.1-41
[Issue Type] New feature

Change-Id: I80397d47324de0b80a24eaa619cd03da8417f746
Signed-off-by: Sangchul Lee <sc11.lee@samsung.com>