asoc: wcd938x: Update SWR clock rate based on modes

Update SWR clock rate based on active ADC modes
for concurrency during powerup and teardown.

Change-Id: I610aa205a857a5fac2163a248de4800f3c8042f7
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>