arm64: dts: uniphier: Add missing reg properties for glue layer nodes

The nodes for some glue layers don't include necessary reg properties.
Add the properties according to the DT schema.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230207023514.29783-7-hayashi.kunihiko@socionext.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>