mtd: rawnand: arasan: Check the proposed data interface is supported

[ Upstream commit 4dd7ef97 ]

Check the data interface is supported in ->setup_interface() before
acknowledging the timings.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210505213750.257417-3-miquel.raynal@bootlin.com


Signed-off-by: Sasha Levin <sashal@kernel.org>