Input: cy8ctmg110_ts - do not hard code interrupt trigger

Rely on the platform to set up interrupt polarity/type properly instead
of hard-coding falling edge.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210603043726.3793876-2-dmitry.torokhov@gmail.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>