Input: cyttsp - flag the device properly

This device is certainly a very simple touchscreen so
we set INPUT_MT_DIRECT.

Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210408131153.3446138-9-linus.walleij@linaro.org


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