ARM: bcm2835: dts: add thermal node to device-tree of bcm283x

Add the node for the thermal sensor of the bcm2835-soc
to the device tree.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>

Changelog:
V1 -> V5: generic settings is shared in bcm283x.dtsi, but disabled
	  moved the compatible string to the SOC specific dtsi
            for arm and arm64
V5 -> V6: fix remove 0x prefix from thermal@0x7e212000

Note: there is no arm/boot/dts/bcm2837.dtsi as of now,
      so the 32-bit rpi3 dt is not modified.
Signed-off-by: Eric Anholt <eric@anholt.net>

arch/arm/boot/dts/bcm2835.dtsi

@@ -23,3 +23,9 @@ arm-pmu {
 		};
 	};
 };
+
+/* enable thermal sensor with the correct compatible property set */
+&thermal {
+	compatible = "brcm,bcm2835-thermal";
+	status = "okay";
+};

arch/arm/boot/dts/bcm2836.dtsi

@@ -76,3 +76,9 @@ &intc {
 	interrupt-parent = <&local_intc>;
 	interrupts = <8>;
 };
+
+/* enable thermal sensor with the correct compatible property set */
+&thermal {
+	compatible = "brcm,bcm2836-thermal";
+	status = "okay";
+};

arch/arm/boot/dts/bcm283x.dtsi

@@ -390,6 +390,13 @@ pixelvalve@7e207000 {
 			interrupts = <2 14>; /* pwa1 */
 		};
 
+		thermal: thermal@7e212000 {
+			compatible = "brcm,bcm2835-thermal";
+			reg = <0x7e212000 0x8>;
+			clocks = <&clocks BCM2835_CLOCK_TSENS>;
+			status = "disabled";
+		};
+
 		aux: aux@0x7e215000 {
 			compatible = "brcm,bcm2835-aux";
 			#clock-cells = <1>;