Document FocalTech FT8716 support by adding the compatible. Signed-off-by: Jens Reidel <adrian@mainlining.org> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250313202017.19621-2-adrian@mainlining.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>