Similar to w25q256 (besides not supporting QPI mode) but with different ID.
The "JVM" suffix is in the datasheet.
The datasheet indicates DUAL and QUAD are supported.
https://www.winbond.com/resource-files/w25q256jv%20spi%20revi%2010232018%20plus.pdf
Signed-off-by: Avi Fishman <avifishman70@gmail.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>