Revert "dt-bindings: thermal: qcom-spmi-temp-alarm: Fix documentation of 'reg'"

This reverts commit e7044726.

Already picked up via Eduardo's thermal tree
Signed-off-by: Andy Gross <andy.gross@linaro.org>

Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt

@@ -6,7 +6,8 @@ interrupt signal and status register to identify high PMIC die temperature.
 
 Required properties:
 - compatible:      Should contain "qcom,spmi-temp-alarm".
-- reg:             Specifies the SPMI address.
+- reg:             Specifies the SPMI address and length of the controller's
+                   registers.
 - interrupts:      PMIC temperature alarm interrupt.
 - #thermal-sensor-cells: Should be 0. See thermal.txt for a description.
 
@@ -19,7 +20,7 @@ Example:
 
 	pm8941_temp: thermal-alarm@2400 {
 		compatible = "qcom,spmi-temp-alarm";
-		reg = <0x2400>;
+		reg = <0x2400 0x100>;
 		interrupts = <0 0x24 0 IRQ_TYPE_EDGE_RISING>;
 		#thermal-sensor-cells = <0>;