dt-bindings: net: wireless: Add Realtek RTL8188ETV USB WiFi

This is an on-board USB device that requires a 3.3V supply.

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250408-rtl-onboard-v2-1-0b6730b90e31@posteo.net


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