ALSA: hda/realtek - Enable micmute LED for Huawei laptops

Since this LED is found on all Huawei laptops, we can hook it to
huawei-wmi platform driver to control it.

Also, some renames have been made to use product name instead of common
name to avoid confusions.

Fixes: 8ac51bbc

 ("ALSA: hda: fix front speakers on Huawei MBXP")
Signed-off-by: Ayman Bagabas <ayman.bagabas@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>