[ARM] 4180/1: S3C24XX: Update docs for S3C2412 and S3C2413

The S3C2412 and S3C2413 are supported, so document
this as so

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Documentation/arm/Samsung-S3C24XX/Overview.txt

@@ -8,13 +8,10 @@ Introduction
 
   The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
   by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
-  S3C2440 and S3C2442 devices are supported.
+  S3C2412, S3C2413, S3C2440 and S3C2442 devices are supported.
 
   Support for the S3C2400 series is in progress.
 
-  Support for the S3C2412 and S3C2413 CPUs is being merged.
-
-
 Configuration
 -------------