dt-bindings: input: melfas,mms114: add MMS252 compatible

Add a compatible for MMS252 touchscreen which appears to work fine with
the MMS114 driver.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bryant Mairs <bryant@mai.rs>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20231105204759.37107-2-bryant@mai.rs


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