ASoC: io: Remove SND_SOC_I2C

Now that all users have been converted to regmap we can eliminate the ASoC
level wrapper for I2C I/O reducing the amount of duplicated functionality.

Signed-off-by: Mark Brown <broonie@linaro.org>

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

diff --cc sound/soc/soc-io.c
Simple merge