Input: xpad - fix support for some third-party controllers

Input: xpad - fix support for some third-party controllers

Some third-party controllers, such as the HORPIAD FPS for Nintendo Switch
and Gamesir-G3w, require a specific packet that the first-party XInput
driver sends before it will start sending reports. It's not currently known
what this packet does, but since the first-party driver always sends it's
unlikely that this could cause issues with existing controllers.

Co-authored-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/20230607012812.379640-2-vi@endrift.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>