evdev: Rename helper function key_is_pressed to event_key_is_pressed
evdev: Rename helper function key_is_pressed to event_key_is_pressed

Signed-off-by: Petr Štetiar <f0d4d86d9c7002e67e6ae7bb5596bc0afa7b4c3a@true.cz>

ynezz/luaevdev