ASoC: max98925: Fix mask for setting DAI invert mode

The M98925_DAI_WCI_MASK bit is not updated with current code.
To properly set the DAI invert mode, the mask should be
M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org