Move mpc86xx PIXIS code to board directory

First cut at moving the PIXIS platform code out of
the 86xx cpu directory and into board/mpc8641hpcn
where it belongs.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/board/mpc8641hpcn/Makefile b/board/mpc8641hpcn/Makefile
index d6037c1..2613730 100644
--- a/board/mpc8641hpcn/Makefile
+++ b/board/mpc8641hpcn/Makefile
@@ -25,7 +25,7 @@
 
 LIB	= lib$(BOARD).a
 
-OBJS	:= $(BOARD).o oftree.o
+OBJS	:= $(BOARD).o pixis.o oftree.o
 SOBJS	:= init.o
 
 $(LIB):	$(OBJS) $(SOBJS)