dt-bindings: serial: actions,owl-uart: convert to dtschema

From: Kanak Shilledar <[email protected]>

Convert the Actions Semi Owl UART to newer DT schema. Created DT schema based on the .txt file which had compatible, reg and interrupts as the
required properties. This binding is used by Actions S500, S700 and S900 SoC. S700 and S900 use the same UART compatible string.

---
Changes in v5
- rebased the patch
- sent to all the maintainers

Changes in v4
- updated commit message
- clocks property is removed from the required section.
- remove disabled status from example devicetree

---
 .../bindings/serial/actions,owl-uart.txt      | 16 -------
 .../bindings/serial/actions,owl-uart.yaml     | 48 +++++++++++++++++++
 2 files changed, 48 insertions(+), 16 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/serial/actions,owl-uart.txt
 create mode 100644 Documentation/devicetree/bindings/serial/actions,owl-uart.yaml

deleted file mode 100644
index aa873eada02d..000000000000
@@ -1,16 +0,0 @@
-Actions Semi Owl UART
-
-Required properties:
-- compatible :  "actions,s500-uart", "actions,owl-uart" for S500
-                "actions,s900-uart", "actions,owl-uart" for S900
-- reg        :  Offset and length of the register set for the device.
-- interrupts :  Should contain UART interrupt.
-
-
-Example:
-
-		uart3: serial@b0126000 {
-			compatible = "actions,s500-uart", "actions,owl-uart";
-			reg = <0xb0126000 0x1000>;
-			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
-		};

2.34.1