The qca9557/qca956x reset-controller aren't a simple bus. A simple bus
would require node unit addresses.
Add the node unit addresses for the qca9557 usb phys. Add the regs for
the USB_PWRCTL and USB_CONFIG registers even not yet used.
Fix the wrong ar7100 pcie controller node unit address as well.
Signed-off-by: Mathias Kresin <dev@kresin.me>