ALSA: hda/ca0132 - Add AE-7 custom controls.

Add headphone gain and DAC filter controls, which use the same commands
as the AE-5. Also, change input source enumerated control item count to
exclude front microphone.

Signed-off-by: Connor McAdams <conmanx360@gmail.com>
Link: https://lore.kernel.org/r/20200825201040.30339-20-conmanx360@gmail.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>