arm64: zynqmp: Enable iio-hwmon description only for SOM

Description is coming from SOM only that's why enable it only on SOM.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/08ee4ce2fe242905dd99cea2b87373b57d8fea91.1736152939.git.michal.simek@amd.com
diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi
index e8750b0..0e0436e 100644
--- a/arch/arm/dts/zynqmp.dtsi
+++ b/arch/arm/dts/zynqmp.dtsi
@@ -393,8 +393,9 @@
 		};
 	};
 
-	ams {
+	ams: ams {
 		compatible = "iio-hwmon";
+		status = "disabled";
 		io-channels = <&xilinx_ams 0>, <&xilinx_ams 1>, <&xilinx_ams 2>,
 			<&xilinx_ams 3>, <&xilinx_ams 4>, <&xilinx_ams 5>,
 			<&xilinx_ams 6>, <&xilinx_ams 7>, <&xilinx_ams 8>,