flashchips: Add W25Q128.V..W

Port the code from chromeos flashrom.
Tested using W25Q128JVSIM in SPI mode.

Change-Id: I38397a0c831407afa21cddca8485664576fce92c
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/28910
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
2 files changed