arm64: dts: rockchip: fix property for usb2 phy supply on rk3568-evb1-v10

The property "vbus-supply" was copied from the vendor kernel but is not
available in mainstream. Use correct property "phy-supply".

Fixes: d6cfb110 ("arm64: dts: rockchip: add usb3 support to rk3568-evb1-v10")
Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Link: https://lore.kernel.org/r/20220905064335.104650-2-michael.riesch@wolfvision.net


Signed-off-by: Heiko Stuebner <heiko@sntech.de>