[ALSA] hda-codec - Add speaker automute to ALC262 HP models

Added the speaker-automute function to ALC262 HP models.
Also, 'Mono' mixer elements are renamed as more intuitive 'Speaker'.

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