dt-bindings: input: convert drv266x to json-schema

Convert devicetree binding documentation for ti drv2665 and drv2667
haptics driver to json-schema. The previously two separate bindings have
been merged into a single drv266x.yaml.

Signed-off-by: Anshul Dalal <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

Documentation/devicetree/bindings/input/ti,drv2665.txt

···
-* Texas Instruments - drv2665 Haptics driver
-
-Required properties:
-	- compatible - "ti,drv2665" - DRV2665
-	- reg -  I2C slave address
-	- vbat-supply - Required supply regulator
-
-Example:
-
-haptics: haptics@59 {
-	compatible = "ti,drv2665";
-	reg = <0x59>;
-	vbat-supply = <&vbat>;
-};
-
-For more product information please see the link below:
-http://www.ti.com/product/drv2665

Documentation/devicetree/bindings/input/ti,drv2667.txt

···
-* Texas Instruments - drv2667 Haptics driver
-
-Required properties:
-	- compatible - "ti,drv2667" - DRV2667
-	- reg -  I2C slave address
-	- vbat-supply - Required supply regulator
-
-Example:
-
-haptics: haptics@59 {
-	compatible = "ti,drv2667";
-	reg = <0x59>;
-	vbat-supply = <&vbat>;
-};
-
-For more product information please see the link below:
-http://www.ti.com/product/drv2667

Documentation/devicetree/bindings/input/ti,drv266x.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/ti,drv266x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments - drv266x Haptics driver
+
+description: |
+  Product Page:
+    http://www.ti.com/product/drv2665
+    http://www.ti.com/product/drv2667
+
+maintainers:
+  - Anshul Dalal <[e-mail]>
+
+properties:
+  compatible:
+    enum:
+      - ti,drv2665
+      - ti,drv2667
+
+  reg:
+    maxItems: 1
+
+  vbat-supply:
+    description: Required supply regulator
+
+required:
+  - compatible
+  - reg
+  - vbat-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        haptics@59 {
+            compatible = "ti,drv2667";
+            reg = <0x59>;
+            vbat-supply = <&vbat>;
+        };
+    };