ASoC: Fix WM8903 DAC mute default

The WM8903 register map does not mute the DAC by default at startup
so we need to explicitly do so.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
1 file changed