arm64: dts: qcom: sc7180: Drop redundant disable in mdp

mdss is useless without a display controller which makes explicitly
enabling mdp redundant. Have it enabled by default to drop the extra
node for all users.
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230515093744.289045-3-nikita@trvn.ru

arch/arm64/boot/dts/qcom/sc7180-idp.dts

@@ -334,10 +334,6 @@ &dsi_phy {
 	vdds-supply = <&vreg_l4a_0p8>;
 };
 
-&mdp {
-	status = "okay";
-};
-
 &mdss {
 	status = "okay";
 };

arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi

@@ -821,10 +821,6 @@ &lpass_hm {
 	status = "okay";
 };
 
-&mdp {
-	status = "okay";
-};
-
 &mdss {
 	status = "okay";
 };

arch/arm64/boot/dts/qcom/sc7180.dtsi

@@ -2988,8 +2988,6 @@ mdp: display-controller@ae01000 {
 				interrupt-parent = <&mdss>;
 				interrupts = <0>;
 
-				status = "disabled";
-
 				ports {
 					#address-cells = <1>;
 					#size-cells = <0>;