ppc4xx: Add basic support for AMCC 460EX/460GT (3/5)

This patch adds basic support for the AMCC 460EX/460GT PPC's.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/405_mal.h b/include/405_mal.h
index 7ea4eb1..1415cbe 100644
--- a/include/405_mal.h
+++ b/include/405_mal.h
@@ -94,6 +94,7 @@
       /* Mal IER		      */
 #if defined(CONFIG_440SPE) || \
     defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_460EX) || defined(CONFIG_460GT) || \
     defined(CONFIG_405EX)
 #define MAL_IER_PT	  0x00000080
 #define MAL_IER_PRE	  0x00000040