mtd: spinand: winbond: Enable high-speed modes on w25n0xjw

mtd: spinand: winbond: Enable high-speed modes on w25n0xjw

[ Upstream commit f1a91175faaab02a45d1ceb313a315a5bfeb5416 ]

w25n0xjw chips have a high-speed capability hidden in a configuration
register. Once enabled, dual/quad SDR reads may be performed at a much
higher frequency.

Implement the new ->configure_chip() hook for this purpose and configure
the SR4 register accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Stable-dep-of: 4550d33e1811 ("mtd: spinand: winbond: Fix oob_layout for W25N01JW")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>