ALSA: hda - Fix typos in snd_hda_get_int_hint() kerneldoc comments

Signed-off-by: Takashi Iwai <tiwai@suse.de>
ALSA: hda - Create capture source ctls when stereo mix input is added

When the stereo mix input is explicitly enabled via a user hint, the
driver should create always a capture source enum ctl and disable the
auto-mic switch.  Otherwise the behavior gets confused.  For doing it,
this patch just sets spec->suppress_auto_mic flag appropriately.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
ALSA: hda - Make add_stereo_mix_input flag tristate

... for distinguishing whether it's explicitly enabled via a user hint
or enabled by a driver as a fallback.  Now the former case corresponds
to HDA_HINT_STEREO_MIX_ENABLE while the latter to
HDA_HINT_STEREO_MIX_AUTO.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
ALSA: hda/hdmi - apply Haswell fix-ups to Skylake display codec

Skylake and Haswell have the same behavior on display audio. So this patch
applys Haswell fix-ups to Skylake.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>