Add compatible string for exynosautov920 pin controller. Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com> Link: https://lore.kernel.org/r/20231115095609.39883-7-jaewon02.kim@samsung.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>