dt-bindings:iio:accel:fsl,mma8452: txt to yaml conversion.

Simple binding so mostly straight forward to convert.
Original binding was unclear on how many interrupts there are.
The device has two such lines, whilst I believe the driver currently
only uses one at a time.  The binding should allow both to be specified.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Link: https://lore.kernel.org/r/20201031184854.745828-43-jic23@kernel.org

Documentation/devicetree/bindings/iio/accel/fsl,mma8452.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/accel/fsl,mma8452.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title:
+  Freescale MMA8451Q, MMA8452Q, MMA8453Q, MMA8652FC, MMA8653FC or FXLS8471Q
+  triaxial accelerometer
+
+maintainers:
+  - Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
+
+properties:
+  compatible:
+    enum:
+      - fsl,mma8451
+      - fsl,mma8452
+      - fsl,mma8453
+      - fsl,mma8652
+      - fsl,mma8653
+      - fsl,fxls8471
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description:
+      2 highly configurable interrupt lines exist.
+    minItems: 1
+    maxItems: 2
+
+  interrupt-names:
+    description: Specify which interrupt line is in use.
+    items:
+      enum:
+        - INT1
+        - INT2
+    minItems: 1
+    maxItems: 2
+
+  vdd-supply: true
+  vddio-supply: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        accel@1d {
+            compatible = "fsl,mma8453";
+            reg = <0x1d>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <5 0>;
+            interrupt-names = "INT2";
+        };
+    };
+...

Documentation/devicetree/bindings/iio/accel/mma8452.txt

-Freescale MMA8451Q, MMA8452Q, MMA8453Q, MMA8652FC, MMA8653FC or FXLS8471Q
-triaxial accelerometer
-
-Required properties:
-
-  - compatible: should contain one of
-    * "fsl,mma8451"
-    * "fsl,mma8452"
-    * "fsl,mma8453"
-    * "fsl,mma8652"
-    * "fsl,mma8653"
-    * "fsl,fxls8471"
-
-  - reg: the I2C address of the chip
-
-Optional properties:
-
-  - interrupts: interrupt mapping for GPIO IRQ
-
-  - interrupt-names: should contain "INT1" and/or "INT2", the accelerometer's
-		     interrupt line in use.
-
-  - vdd-supply: phandle to the regulator that provides vdd power to the accelerometer.
-
-  - vddio-supply: phandle to the regulator that provides vddio power to the accelerometer.
-
-Example:
-
-	mma8453fc@1d {
-		compatible = "fsl,mma8453";
-		reg = <0x1d>;
-		interrupt-parent = <&gpio1>;
-		interrupts = <5 0>;
-		interrupt-names = "INT2";
-	};