ASoC: wcd9330: Explicitly reset MAD block on codec

It is possible that MAD block in codec can be in reset state when MAD is
enabled. This will cause MAD to not work as expected. Add fix to
explicitly reset/undo reset MAD block when MAD is enabled/disabled.

Change-Id: I30bf73b4e501e7e396e73c4dde9007b3218a91dc
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>