arm64: dts: uniphier: Add syscon-uhs-mode to SD node

Add sociopnext,syscon-uhs-mode prpperty to the SD node to refer the handle
of the control logic node.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230207023514.29783-9-hayashi.kunihiko@socionext.com


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