ALSA: usb-audio: Simplify with usb_endpoint_max_periodic_payload()
Recently we received a new helper function,
usb_endpoint_max_periodic_payload(), for calculating the max packet
size for periodic transfer.
Simplify the former open code with the new helper function.
Fixes: a748e1dbb2df ("ALSA: usb-audio: Fix max bytes-per-interval calculation")
Suggested-by: Michal Pecio <michal.pecio@gmail.com>
Link: https://lore.kernel.org/20251124210518.90054-1-dylan_robinson@motu.com
Link: https://patch.msgid.link/20251202070828.145656-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>