ppc4xx: Add initial AMCC Kilauea 405EX support

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/Makefile b/Makefile
index 5643aa9..ba96ca1 100644
--- a/Makefile
+++ b/Makefile
@@ -1168,6 +1168,9 @@
 katmai_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx katmai amcc
 
+kilauea_config:	unconfig
+	@$(MKCONFIG) $(@:_config=) ppc ppc4xx kilauea amcc
+
 luan_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx luan amcc