dt-bindings: net: btusb: add QCA6174A IDs

There are two USB PID/VID variations I've seen for this chip, and I want
to utilize the 'interrupts' property defined here already.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>