[ALSA] ASoC codecs: build files

This patch adds an ASoC Makefile and Kconfig for the WM8731, WM8750 and
WM9712 codecs.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
4 files changed