[ALSA] hda-codec - Avoid overload of PCM volume on Cx5045 codec

The PCM volume of Cx5045 codec has overload that isn't useful but
rather harmful.  Add a hack to override the amp info to set the max
level 0 dB.

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