ALSA: hda - Fix invalid bit values passed to snd_hda_codec_amp_stereo()

The mask and value parameters passed to snd_hda_codec_amp_stereo()
should be 8-bit values for mute and volume.  Passing AMP_IN_MUTE() is
wrong, which is found in many places in patch_realtek.c as a left-over
from the conversion to snd_hda_codec_amp_stereo().

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>