mgcoge add the board-specific part of the HDLC driver

Signed-off-by: Gary Jennejohn <garyj@denx.de>
diff --git a/board/keymile/mgcoge/Makefile b/board/keymile/mgcoge/Makefile
index 0cad821..2774a70 100644
--- a/board/keymile/mgcoge/Makefile
+++ b/board/keymile/mgcoge/Makefile
@@ -28,7 +28,8 @@
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o ../common/common.o
+COBJS	:= $(BOARD).o ../common/common.o ../common/keymile_hdlc_enet.o \
+		mgcoge_hdlc_enet.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))