chore(libfdt): update header files to v1.7.0 tag

As part of TF-A 2.9.0 release, libfdt version was updated to its last
tagged version (1.7.0) with commit 058e017e5. This commit has only
updated the source files of libfdt but did not update header files.

This patch updates the libfdt header files in include/lib/libfdt to
the tagged version v1.7.0

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I09a0f51435b343c3e1cac45075fe7d28cbcae867

include/lib/libfdt/fdt.h

@@ -35,14 +35,14 @@ struct fdt_reserve_entry {
 
 struct fdt_node_header {
 	fdt32_t tag;
-	char name[0];
+	char name[];
 };
 
 struct fdt_property {
 	fdt32_t tag;
 	fdt32_t len;
 	fdt32_t nameoff;
-	char data[0];
+	char data[];
 };
 
 #endif /* !__ASSEMBLER__*/

include/lib/libfdt/libfdt.h

@@ -660,6 +660,13 @@ int fdt_next_property_offset(const void *fdt, int offset);
 const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
 						      int offset,
 						      int *lenp);
+static inline struct fdt_property *fdt_get_property_by_offset_w(void *fdt,
+								int offset,
+								int *lenp)
+{
+	return (struct fdt_property *)(uintptr_t)
+		fdt_get_property_by_offset(fdt, offset, lenp);
+}
 
 /**
  * fdt_get_property_namelen - find a property based on substring