[PATCH v6 4/4] of: improve reporting invalid overlay target path

From: Frank Rowand Errors while developing the patch to create of_overlay_fdt_apply() exposed inadequate error messages to debug problems when overlay devicetree fragment nodes contain an invalid target path. Improve the messages in find_target_node() to remedy this.

[PATCH v6 4/4] of: improve reporting invalid overlay target path

From: Frank Rowand Errors while developing the patch to create of_overlay_fdt_apply() exposed inadequate error messages to debug problems when overlay devicetree fragment nodes contain an invalid target path. Improve the messages in find_target_node() to remedy this. Signed-off-by: Frank