dt-bindings: iio: proximity: Add Murata IRS-D200

Murata IRS-D200 is a PIR sensor for human detection. It uses the I2C bus
for communication with interrupt support. Add devicetree bindings
requiring the compatible string, I2C slave address (reg), power supply
and interrupts.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Waqar Hameed <waqar.hameed@axis.com>
Link: https://lore.kernel.org/r/09975910ea638a9aa893411124bbd2a5c98e45c3.1689753076.git.waqar.hameed@axis.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/proximity/murata,irsd200.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/proximity/murata,irsd200.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Murata IRS-D200 PIR sensor
+
+maintainers:
+  - Waqar Hameed <waqar.hameed@axis.com>
+
+description:
+  PIR sensor for human detection.
+
+properties:
+  compatible:
+    const: murata,irsd200
+
+  reg:
+    items:
+      - enum:
+          - 0x48
+          - 0x49
+        description: |
+          When the AD pin is connected to GND, the slave address is 0x48.
+          When the AD pin is connected to VDD, the slave address is 0x49.
+
+  interrupts:
+    maxItems: 1
+    description:
+      Type should be IRQ_TYPE_EDGE_RISING.
+
+  vdd-supply:
+    description:
+      3.3 V supply voltage.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - vdd-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        proximity@48 {
+            compatible = "murata,irsd200";
+            reg = <0x48>;
+            interrupts = <24 IRQ_TYPE_EDGE_RISING>;
+            vdd-supply = <&regulator_3v3>;
+        };
+    };
+...