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>

common/image.c

@@ -1071,6 +1071,7 @@ int boot_ramdisk_high (struct lmb *lmb, ulong rd_data, ulong rd_len,
 error:
 	return -1;
 }
+#endif /* defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SPARC) */
 
 #ifdef CONFIG_OF_LIBFDT
 static void fdt_error (const char *msg)
@@ -1575,6 +1576,7 @@ error:
 }
 #endif /* CONFIG_OF_LIBFDT */
 
+#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 /**
  * boot_get_cmdline - allocate and initialize kernel cmdline
  * @lmb: pointer to lmb handle, will be used for memory mgmt

include/image.h

@@ -50,10 +50,6 @@
 
 #endif /* USE_HOSTCC */
 
-#if defined(CONFIG_FIT) && !defined(CONFIG_OF_LIBFDT)
-#error "CONFIG_OF_LIBFDT not enabled, required by CONFIG_FIT!"
-#endif
-
 #include <command.h>
 
 #if defined(CONFIG_FIT)

libfdt/Makefile

@@ -27,9 +27,13 @@ LIB	= $(obj)libfdt.a
 
 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	:= $(COBJS-y)
+COBJS-$(CONFIG_OF_LIBFDT) += $(COBJS-libfdt)
+COBJS-$(CONFIG_FIT) += $(COBJS-libfdt)
+
+
+COBJS	:= $(sort $(COBJS-y))
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))