[ALSA] hda-codec - Fix wrong pin-setup at resume of STAC codecs

The resume procedure for STAC codecs overrides the cached values and
results in the wrong (reset) PIN state.  The patch gets rid of the
overriding part and simplifies the resume.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>