dt-bindings: input: microchip,cap11xx: add cap1203, cap1293 and cap1298

Add support for cap1203, cap1293 and cap1298.

Signed-off-by: Jiri Valek - 2N <jiriv@axis.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230111131111.475270-2-jiriv@axis.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>