ASoC: Add SmartQ sound driver

This adds sound support for the SmartQ board.

The hardware consists of a S3C6410 coupled with a WM8987 over I²S. The WM8750
driver is used for driving the WM8987, as they are register compatible.

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --cc sound/soc/s3c24xx/Kconfig
Simple merge

diff --cc sound/soc/s3c24xx/Makefile
Simple merge

diff --cc sound/soc/s3c24xx/smartq_wm8987.c
Simple merge