ALSA: hda - fix headphone settings and master volume (Conexant CX20551)

Update the places where the 0x1d widget is used for Conexant 5047, fixing
mismatch introduced after changing the connection.

Signed-off-by: Gregorio Guidi <gregorio.guidi@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>