ASoC: wm8994: Add digital loopback paths

There is loopback control within the audio interfaces, provide control of
this as there are some obscure scenarios where this could be used in
production.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-05-30 13:42:26 +01:00
commit 50941968fc