AVR32: Enable networking

Implement MACB initialization for AVR32 and ATSTK1000, and turn
everything on, including the MACB driver.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
diff --git a/board/atmel/atstk1000/Makefile b/board/atmel/atstk1000/Makefile
index 155d46a..8a15713 100644
--- a/board/atmel/atstk1000/Makefile
+++ b/board/atmel/atstk1000/Makefile
@@ -26,7 +26,7 @@
 
 LIB	:= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o flash.o
+COBJS	:= $(BOARD).o flash.o eth.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))