[PATCH] libfdt: Fix C++ compile-time cast error on gnu 4.2.1

[Laurent Gregoire]

Allow the inclusion of libfdt.h in C++ source.
---
Signed-off-by: Laurent Gregoire <laurent.gregoire at tomtom.com>
---
diff -uprN a/libfdt/libfdt.h b/libfdt/libfdt.h
--- a/libfdt/libfdt.h 2008-07-25 23:17:04.000000000 +0200
+++ b/libfdt/libfdt.h 2009-03-03 14:01:38.000000000 +0100
@@ -156,7 +156,7 @@ int fdt_next_node(const void *fdt, int o
 #define __fdt_set_hdr(name) \
 	static inline void fdt_set_##name(void *fdt, uint32_t val) \
 	{ \
-		struct fdt_header *fdth = fdt; \
+		struct fdt_header *fdth = (struct fdt_header*)fdt; \
 		fdth->name = cpu_to_fdt32(val); \
 	}
 __fdt_set_hdr(magic);