arm64: dts: uniphier: Fix property name in PXs3 USB node

The property "snps,usb2_gadget_lpm_disable" is wrong.
It should be fixed to "snps,usb2-gadget-lpm-disable".

Cc: stable@vger.kernel.org
Fixes: 19fee1a1 ("arm64: dts: uniphier: Add USB-device support for PXs3 reference board")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20230207021429.28925-1-hayashi.kunihiko@socionext.com


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