[ Upstream commit 1666b815ad1a5b6373e950da5002ac46521a9b28 ] Create the relevant ONFI NV-DDR timings structure and fill it with default values from the ONFI specification. Add the relevant structure entries and helpers. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210505213750.257417-9-miquel.raynal@bootlin.com Signed-off-by: Sasha Levin <sashal@kernel.org>