ppc4xx: Add 405GPr based MCU25 board. Global files

Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>
diff --git a/Makefile b/Makefile
index 90198f6..0973999 100644
--- a/Makefile
+++ b/Makefile
@@ -1281,6 +1281,10 @@
 makalu_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx makalu amcc
 
+mcu25_config:  unconfig
+	@mkdir -p $(obj)board/netstal/common
+	@$(MKCONFIG) $(@:_config=) ppc ppc4xx mcu25 netstal
+
 METROBOX_config: unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx metrobox sandburst