ARM: dts: exynos: Remove "simple-bus" compatible from fimc-is node

The "simple-bus" compatible was originally added for fimc-is only
to ensure the child devices instantiation.  The child devices are
now being created by the parent device driver so remove the
"simple-bus" compatible.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos4x12.dtsi

@@ -147,7 +147,7 @@ fimc_lite_1: fimc-lite@123A0000 {
 		};
 
 		fimc_is: fimc-is@12000000 {
-			compatible = "samsung,exynos4212-fimc-is", "simple-bus";
+			compatible = "samsung,exynos4212-fimc-is";
 			reg = <0x12000000 0x260000>;
 			interrupts = <0 90 0>, <0 95 0>;
 			power-domains = <&pd_isp>;