dt-bindings: usb: smsc,usb3503: Add usb3803

Add support for usb3803, compared to usb3503 it uses a regular USB
connection to upstream instead of HSIC, it has an additional
low power mode (bypass) and an additional control signal (BYPASS_N).

In bypass mode the downstream port 3 is connected to the upstream port
with low switch resistance R_on.

Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230313165039.255579-2-francesco@dolcini.it


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