[POWERPC] Merge common virtex header files

The header files for the ml403 and ml300 are virtually identical, merge
them into a single file.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-ppc/ibm4xx.h b/include/asm-ppc/ibm4xx.h
index 92fd02d7..ed6891a 100644
--- a/include/asm-ppc/ibm4xx.h
+++ b/include/asm-ppc/ibm4xx.h
@@ -47,12 +47,8 @@
 #include <platforms/4xx/walnut.h>
 #endif
 
-#if defined(CONFIG_XILINX_ML300)
-#include <platforms/4xx/xilinx_ml300.h>
-#endif
-
-#if defined(CONFIG_XILINX_ML403)
-#include <platforms/4xx/xilinx_ml403.h>
+#if defined(CONFIG_XILINX_VIRTEX)
+#include <platforms/4xx/virtex.h>
 #endif
 
 #ifndef __ASSEMBLY__