libfdt: Drop inlining of fdt_path_offset()

The fdt_path_offset() function is not inlined in upstream libfdt. Adjust
U-Boot's version to match.
Signed-off-by: NSimon Glass <sjg@chromium.org>

include/libfdt.h

@@ -410,10 +410,7 @@ int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
  *	-FDT_ERR_BADSTRUCTURE,
  *	-FDT_ERR_TRUNCATED, standard meanings.
  */
-static inline int fdt_path_offset(const void *fdt, const char *path)
-{
-	return fdt_path_offset_namelen(fdt, path, strlen(path));
-}
+int fdt_path_offset(const void *fdt, const char *path);
 
 /**
  * fdt_get_name - retrieve the name of a given node

lib/libfdt/fdt_ro.c

@@ -204,6 +204,11 @@ int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
 	return offset;
 }
 
+int fdt_path_offset(const void *fdt, const char *path)
+{
+	return fdt_path_offset_namelen(fdt, path, strlen(path));
+}
+
 const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
 {
 	const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);