The device tree compiler complains that the dwc3 nodes have regs
properties but no matching unit addresses.

Add the unit addresses to the device node name. While at it, also rename
the nodes from "dwc3" to "usb", as guidelines require device nodes have
generic names.

Fixes: 7144224f ("arm64: dts: rockchip: support dwc3 USB for rk3399")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20200327030414.5903-7-wens@kernel.orgSigned-off-by: Heiko Stuebner <heiko@sntech.de>