ALSA: hda - Split codec->name to vendor and chip name strings

Split the name string in hda_codec struct to vendor_name and chip_name
strings to be stored directly from the preset name.
Since mostly only the chip name is referred in many patch_*.c, this
results in the reduction of many codes in the end.

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