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>
diff --git a/flashchips.h b/flashchips.h
index 6bc4094..7c1a523 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -925,6 +925,7 @@
 #define WINBOND_NEX_W25Q32_W	0x6016	/* W25Q32DW; W25Q32FV in QPI mode */
 #define WINBOND_NEX_W25Q64_W	0x6017	/* W25Q64DW; W25Q64FV in QPI mode */
 #define WINBOND_NEX_W25Q128_W	0x6018	/* W25Q128FW; W25Q128FV in QPI mode */
+#define WINBOND_NEX_W25Q128_V_M	0x7018	/* W25Q128JVSM */
 
 #define WINBOND_ID		0xDA	/* Winbond */
 #define WINBOND_W19B160BB	0x49