Add a device node for the Spansion S29GL512P NOR FLASH on the Bock-W
development board.  This FLASH resides in the external address space of
the Local Bus State Controller.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/45e6343ae07ef1add8bba5e8281ef9e6a977c573.1694768311.git.geert+renesas@glider.be