ALSA: oxfw: make read-only const array models static

Don't populate the const array on the stack, instead make it static.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230627113253.700065-1-colin.i.king@gmail.com


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