dt-bindings: pinctrl: samsung: Add compatible for Exynos9810 SoC

Add a compatible for Samsung Exynos9810 pinctrl block to the schema.
Exynos9810 has 9 total pin banks and it's similar to other Samsung
SoC pinctrl blocks.

Co-developed-by: Maksym Holovach <nergzd@nergzd723.xyz>
Signed-off-by: Maksym Holovach <nergzd@nergzd723.xyz>
Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Link: https://lore.kernel.org/r/20241026-exynos9810-v3-3-b89de9441ea8@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: nergzd723

Documentation/devicetree/bindings/pinctrl/samsung,pinctrl.yaml

@@ -54,6 +54,7 @@ properties:
       - samsung,exynos7885-pinctrl
       - samsung,exynos850-pinctrl
       - samsung,exynos8895-pinctrl
+      - samsung,exynos9810-pinctrl
       - samsung,exynos990-pinctrl
       - samsung,exynosautov9-pinctrl
       - samsung,exynosautov920-pinctrl