base

Misc. buttons aren't gamepad keys.

BUTTON_[1-9] are intended to be misc. buttons so the kernel will
assign them to non-gamepad devices.  As such, we shouldn't treat them
as belonging to gamepads at all.

Bug: 13432364
Change-Id: I9495760f2379e44785b9ce1cf018b6db7f6cb0f4