dt-bindings:iio:adc:qcom,spmi-iadc: txt to yaml format conversion.

Straight forward conversion.  Not heard from Ivan in a while so if the
email bounces, I'll change the maintainer to myself for this binding unless
anyone else comes forwards.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031184854.745828-37-jic23@kernel.org

Documentation/devicetree/bindings/iio/adc/qcom,spmi-iadc.txt

-Qualcomm's SPMI PMIC current ADC
-
-QPNP PMIC current ADC (IADC) provides interface to clients to read current.
-A 16 bit ADC is used for current measurements. IADC can measure the current
-through an external resistor (channel 1) or internal (built-in) resistor
-(channel 0). When using an external resistor it is to be described by
-qcom,external-resistor-micro-ohms property.
-
-IADC node:
-
-- compatible:
-    Usage: required
-    Value type: <string>
-    Definition: Should contain "qcom,spmi-iadc".
-
-- reg:
-    Usage: required
-    Value type: <prop-encoded-array>
-    Definition: IADC base address and length in the SPMI PMIC register map
-
-- interrupts:
-    Usage: optional
-    Value type: <prop-encoded-array>
-    Definition: End of ADC conversion.
-
-- qcom,external-resistor-micro-ohms:
-    Usage: optional
-    Value type: <u32>
-    Definition: Sense resister value in micro Ohm.
-                If not defined value of 10000 micro Ohms will be used.
-
-Example:
-	/* IADC node */
-	pmic_iadc: iadc@3600 {
-		compatible = "qcom,spmi-iadc";
-		reg = <0x3600 0x100>;
-		interrupts = <0x0 0x36 0x0 IRQ_TYPE_EDGE_RISING>;
-		qcom,external-resistor-micro-ohms = <10000>;
-		#io-channel-cells  = <1>;
-	};
-
-	/* IIO client node */
-	bat {
-		io-channels = <&pmic_iadc  0>;
-		io-channel-names = "iadc";
-	};

Documentation/devicetree/bindings/iio/adc/qcom,spmi-iadc.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/qcom,spmi-iadc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm's SPMI PMIC current ADC
+
+maintainers:
+  - Jonathan Cameron <jic23@kernel.org>
+
+description: |
+  QPNP PMIC current ADC (IADC) provides interface to clients to read current.
+  A 16 bit ADC is used for current measurements. IADC can measure the current
+  through an external resistor (channel 1) or internal (built-in) resistor
+  (channel 0). When using an external resistor it is to be described by
+  qcom,external-resistor-micro-ohms property.
+
+properties:
+  compatible:
+    const: qcom,spmi-iadc
+
+  reg:
+    description: IADC base address and length in the SPMI PMIC register map
+    maxItems: 1
+
+  qcom,external-resistor-micro-ohms:
+    description:
+      Sensor resistor value. If not defined value of 10000 micro Ohms
+      will be used.
+
+  interrupts:
+    maxItems: 1
+    description:
+      End of conversion interrupt.
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spmi_bus {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        pmic_iadc: adc@3600 {
+            compatible = "qcom,spmi-iadc";
+            reg = <0x3600 0x100>;
+            interrupts = <0x0 0x36 0x0 IRQ_TYPE_EDGE_RISING>;
+            qcom,external-resistor-micro-ohms = <10000>;
+            #io-channel-cells  = <1>;
+        };
+    };
+...