Add initial support for the following flash chips

 - Atmel AT29C020
 - STMicroelectronics M29F002B
 - STMicroelectronics M29F002T
 - STMicroelectronics M29F002NT

Corresponding to flashrom svn r105 and coreboot v2 svn r2621.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Signed-off-by: Roger Zauner <roger@eskimo.com>
Acked-by: Peter Stuge <peter@stuge.se>
diff --git a/README b/README
index 2c83b43..9c96857 100644
--- a/README
+++ b/README
@@ -92,6 +92,7 @@
 AMD AM-29F016D
 ASD AE49F2008
 Atmel AT-29C040A
+Atmel AT-29C020
 EMST F49B002UA
 Intel 82802AB (Firmware Hub) 
 Intel 82802AC (Firmware Hub) 
@@ -118,6 +119,9 @@
 SST SST-49LF004C
 SST SST-49LF008C
 SST SST-49LF016C
+ST ST-M29F002B
+ST ST-M29F002T
+ST ST-M29F002NT
 ST ST-M29F400BT
 ST ST-M29F040B
 SyncMOS S29C51001T/B