arm64: dts: apm: Move slimpro nodes out of "simple-bus" node

The slimpro nodes are not MMIO devices, so they don't belong under a
"simple-bus" node. Move them to the top level.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250910214822.508317-2-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/boot/dts/apm/apm-storm.dtsi

@@ -134,6 +134,16 @@
 		interrupts = <1 12 0xff04>;
 	};
 
+	i2cslimpro {
+		compatible = "apm,xgene-slimpro-i2c";
+		mboxes = <&mailbox 0>;
+	};
+
+	hwmonslimpro {
+		compatible = "apm,xgene-slimpro-hwmon";
+		mboxes = <&mailbox 7>;
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <2>;
@@ -761,16 +771,6 @@
 					<0x0 0x7 0x4>;
 		};
 
-		i2cslimpro {
-			compatible = "apm,xgene-slimpro-i2c";
-			mboxes = <&mailbox 0>;
-		};
-
-		hwmonslimpro {
-			compatible = "apm,xgene-slimpro-hwmon";
-			mboxes = <&mailbox 7>;
-		};
-
 		serial0: serial@1c020000 {
 			status = "disabled";
 			compatible = "ns16550a";