[ALSA] hda-codec - Fix mixer names of realtek codecs to adapt mater controls

Some models like eeepc ep20 have invalid mixer names that aren't
handled properly by virtual master controls.  Rename them to the
proper names.

Also fixed some typos in the mixer names but they are not compiled
in right now.

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