ASoC: wcd9xxx: Add fix to correct the tx digital gain array check

The array size check for the TX digital gain is using the size
of the RX register array instead of TX.  This change uses the
correct array name.

CRs-fixed: 416868
Change-Id: Id35c007703e7870102de5832ba365db473722b65
Signed-off-by: Damir Didjusto <damird@codeaurora.org>
2 files changed