ALSA: Use const struct ac97_quirk

Use const to reduce data by ~3Kb.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --cc include/sound/ac97_codec.h
Simple merge

diff --cc sound/pci/ac97/ac97_codec.c
Simple merge

diff --cc sound/pci/ad1889.c
Simple merge

diff --cc sound/pci/atiixp.c
Simple merge

diff --cc sound/pci/cs5535audio/cs5535audio.c
Simple merge

diff --cc sound/pci/intel8x0.c
Simple merge

diff --cc sound/pci/via82xx.c
Simple merge