Input: xpad - allow delaying init packets

Input: xpad - allow delaying init packets

Some Xbox One controllers will only start processing the init packets after
sending the GIP announce packet. While most controllers send this packet
immediately, others will delay for some time, e.g. if a dongle needs to connect
to an actual controller first. In those cases, we want to delay until we
receive the announce packet before sending the init sequence.

Signed-off-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/20250513225411.2718072-2-vi@endrift.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>