dt-bindings: usb: tegra-xudc: Document interconnects and iommus properties

Add the interconnects, interconnect-names and iommus properties to the
device tree bindings for the Tegra XUDC controller. These are used to
describe the device's paths to and from memory.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211206155559.232550-1-thierry.reding@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>