Update list of supported flash chips in the flashrom README

Corresponding to flashrom svn r81 and coreboot v2 svn r2518.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/README b/README
index c06f40f..1a6bd3b 100644
--- a/README
+++ b/README
@@ -89,6 +89,7 @@
 
 AMD AM-29F040B
 AMD AM-29F016D
+ASD AE49F2008
 Atmel AT-29C040A
 EMST F49B002UA
 Intel 82802AB (Firmware Hub) 
@@ -114,7 +115,10 @@
 SST SST-49LF008A
 ST ST-M29F400BT
 ST ST-M29F040B
-SyncMOS S29C51002T
+SyncMOS S29C51001T/B
+SyncMOS S29C51002T/B
+SyncMOS S29C51004T/B
+SyncMOS S29C31004T
 Winbond W29C011
 Winbond W29C020C
 Winbond W49F002U