mtd: spi-nor: spansion: Rework cypress_nor_quad_enable_volatile() for multi-chip device support

Rework quad method for multi-chip devices by updating CFR1V in all
dice in the device.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/1b5606dbcc11b3432c306a75880f05c68e927fb9.1680849425.git.Takahiro.Kuwano@infineon.com


Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>