sound control: add register cache

bump to version 3.2

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	sound/soc/codecs/wcd9320.c
Signed-off-by: flar2 <asegaert@gmail.com>

Conflicts:
	sound/soc/codecs/sound_control_3_gpl.c
	sound/soc/codecs/wcd9320.c