dt-bindings: mtd: atmel,dataflash: convert txt to yaml

Convert atmel-dataflash.txt into atmel,dataflash.yaml

Signed-off-by: Nayab Sayed <nayabbasha.sayed@microchip.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Documentation/devicetree/bindings/mtd/atmel,dataflash.yaml

@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/atmel,dataflash.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel DataFlash
+
+maintainers:
+  - Nayab Sayed <nayabbasha.sayed@microchip.com>
+
+description:
+  The Atmel DataFlash is a low pin-count serial interface sequential access
+  Flash memory, compatible with SPI standard. The device tree may optionally
+  contain sub-nodes describing partitions of the address space.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - atmel,at45db321d
+              - atmel,at45db041e
+              - atmel,at45db642d
+              - atmel,at45db021d
+          - const: atmel,at45
+          - const: atmel,dataflash
+      - items:
+          - const: atmel,at45
+          - const: atmel,dataflash
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: mtd.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash@1 {
+            compatible = "atmel,at45db321d", "atmel,at45", "atmel,dataflash";
+            reg = <1>;
+        };
+    };