ASoC: wcd9335: Fix race during codec master clock (mclk) enablement

It is possible that codec master clock enablement could race from two
different execution contexts, causing the mclk to be not enabled at all.
This will result in failure of use cases that expect the clock to be
present. Fix this issue by making sure the race condition does not
occur during mclk enablement.

bug: b/30983442
Change-Id: Ie254b8876524956b816267eaaed205f65641c000
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>