[POWERPC] bootwrapper: Add a firmware-independent simpleboot target.

This target produces a flat binary rather than an ELF file,
fixes the entry point at the beginning of the image, and takes
a complete device tree with no fixups needed.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 087e120..14a0182 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -199,6 +199,10 @@
     platformo="$object/fixed-head.o $object/redboot-8xx.o"
     binary=y
     ;;
+simpleboot-virtex405-*)
+    platformo="$object/virtex405-head.o $object/simpleboot.o"
+    binary=y
+    ;;
 esac
 
 vmz="$tmpdir/`basename \"$kernel\"`.$ext"