arm64: dts: uniphier: Add syscon compatible string to soc-glue-debug

Add "syscon" compatible string to the nodes for soc-glue-debug
according to the DT schema.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230207023514.29783-8-hayashi.kunihiko@socionext.com


Signed-off-by: Arnd Bergmann <arnd@arndb.de>