ASoC: Add support for CS42L56 CODEC

This patch adds support for the Cirrus Logic Low Power Stereo I2C CODEC

Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --cc include/sound/cs42l56.h
Simple merge

diff --cc sound/soc/codecs/Kconfig
Simple merge

diff --cc sound/soc/codecs/Makefile
Simple merge

diff --cc sound/soc/codecs/cs42l56.c
Simple merge

diff --cc sound/soc/codecs/cs42l56.h
Simple merge