ALSA: oxfw: code refactoring for jumbo-payload quirk in OXFW970

This commit adds enumeration to describe quirks of OXFW ASICs.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210518084557.102681-9-o-takashi@sakamocchi.jp


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