Fix FIT and FDT support to have CONFIG_OF_LIBFDT and CONFIG_FIT independent

FDT support is used for both FIT style images and for architectures
that can pass a fdt blob to an OS (ppc, m68k, sparc).

For other architectures and boards which do not pass a fdt blob to an
OS but want to use the new uImage format, we just need FIT support.

Now we can have the 4 following configurations :

1) FIT only             CONFIG_FIT
2) fdt blob only        CONFIG_OF_LIBFDT
3) both                 CONFIG_OF_LIBFDT & CONFIG_FIT
4) none                 none

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/libfdt/Makefile b/libfdt/Makefile
index ca2ad76..d6e2830 100644
--- a/libfdt/Makefile
+++ b/libfdt/Makefile
@@ -27,9 +27,13 @@
 
 SOBJS	=
 
-COBJS-$(CONFIG_OF_LIBFDT) += fdt.o fdt_ro.o fdt_rw.o fdt_strerror.o fdt_sw.o fdt_wip.o
+COBJS-libfdt += fdt.o fdt_ro.o fdt_rw.o fdt_strerror.o fdt_sw.o fdt_wip.o
+
+COBJS-$(CONFIG_OF_LIBFDT) += $(COBJS-libfdt)
+COBJS-$(CONFIG_FIT) += $(COBJS-libfdt)
+
 
-COBJS	:= $(COBJS-y)
+COBJS	:= $(sort $(COBJS-y))
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))