Signed-off-by: NMichael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

Add PCM1792A spi mode codec support. This version implements only
a subset of functionalities. Tested connect to a pandaboard ES
device and based on recently pcm1681 codec.
Signed-off-by: NMichael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: NMark Brown <broonie@linaro.org>