Add missing supported flash chips to the README

Corresponding to flashrom svn r124 and coreboot v2 svn r2742.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/README b/README
index 627239a..8aec2a0 100644
--- a/README
+++ b/README
@@ -127,11 +127,21 @@
 SST SST-49LF004C
 SST SST-49LF008C
 SST SST-49LF016C
+ST ST-M50FLW040A
+ST ST-M50FLW040B
+ST ST-M50FLW080A
+ST ST-M50FLW080B
+ST ST-M50FW040
+ST ST-M50FW080
+ST ST-M50FW016
+ST ST-M50LPW116
 ST ST-M29F002B
 ST ST-M29F002T
 ST ST-M29F002NT
 ST ST-M29F400BT
 ST ST-M29F040B
+ST ST-M29W010B
+ST ST-M29W040B
 SyncMOS S29C51001T/B
 SyncMOS S29C51002T/B
 SyncMOS S29C51004T/B