flashchips: Add W25Q512JV

https://www.winbond.com/resource-files/W25Q512JV%20DTR%20RevB%2006132019%20133.pdf



Tested with dediprog SF100.

Change-Id: I8d16f0918785795cc49500435a03641b87d706e9
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/34595


Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>