flashchips: Add untested Winbond W25Q128.W

Only difference to its sibling W25Q128.V seems to be the supply voltage.

Change-Id: I34ce7f1bdd0d2fb1b065031e5a689bb16ffc70db
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/19436
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
diff --git a/flashchips.h b/flashchips.h
index 9ffb30f..28a155d 100644
--- a/flashchips.h
+++ b/flashchips.h
@@ -906,7 +906,7 @@
 #define WINBOND_NEX_W25Q16_W	0x6015	/* W25Q16DW */
 #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	/* (No W version known) W25Q128FV in QPI mode */
+#define WINBOND_NEX_W25Q128_W	0x6018	/* W25Q128FW; W25Q128FV in QPI mode */
 
 #define WINBOND_ID		0xDA	/* Winbond */
 #define WINBOND_W19B160BB	0x49