dt-bindings: gpu: mali-utgard: Add st,stih410-mali compatible

ST STiH410 SoC has a Mali400. Add a compatible for it.

Signed-off-by: Alain Volmat <avolmat@me.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>

Author: Alain Volmat

Documentation/devicetree/bindings/gpu/arm,mali-utgard.yaml

@@ -33,6 +33,7 @@ properties:
               - rockchip,rk3188-mali
               - rockchip,rk3228-mali
               - samsung,exynos4210-mali
+              - st,stih410-mali
               - stericsson,db8500-mali
               - xlnx,zynqmp-mali
           - const: arm,mali-400