dt-bindings-aspeed-i2 Convert to yaml format

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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/aspeed,i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED I2C on the AST24XX, AST25XX, and AST26XX SoCs Device Tree Bindings
+
+maintainers:
+  - Rayn Chen <[email protected]>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - aspeed,ast2400-i2c-bus
+      - aspeed,ast2500-i2c-bus
+      - aspeed,ast2600-i2c-bus
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description: address offset and range of bus
+      - description: address offset and range of bus buffer
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+    description:
+      root clock of bus, should reference the APB
+      clock in the second cell
+
+  resets:
+    maxItems: 1
+
+  bus-frequency:
+    minimum: 500
+    maximum: 4000000
+    default: 100000
+    description: frequency of the bus clock in Hz defaults to 100 kHz when not
+      specified
+
+  multi-master:
+    type: boolean
+    description:
+      states that there is another master active on this bus
+
+required:
+  - reg
+  - compatible
+  - clocks
+  - resets
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/aspeed-clock.h>
+    i2c0: i2c-bus at 40 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      #interrupt-cells = <1>;
+      compatible = "aspeed,ast2500-i2c-bus";
+      reg = <0x40 0x40>;
+      clocks = <&syscon ASPEED_CLK_APB>;
+      resets = <&syscon ASPEED_RESET_I2C>;
+      bus-frequency = <100000>;
+      interrupts = <0>;
+      interrupt-parent = <&i2c_ic>;
+    };

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