VCMA9: various cleanups/code style fixes

Signed-off-by: David Müller <d.mueller@elsoft.ch>
diff --git a/board/mpl/vcma9/Makefile b/board/mpl/vcma9/Makefile
index 59c25f9..6228762 100644
--- a/board/mpl/vcma9/Makefile
+++ b/board/mpl/vcma9/Makefile
@@ -28,8 +28,8 @@
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	:= vcma9.o cmd_vcma9.o
-COBJS	+= ../common/common_util.o
+COBJS	:= ../common/common_util.o
+COBJS	+= $(BOARD).o cmd_$(BOARD).o
 
 SOBJS	:= lowlevel_init.o