dts: bindings: ps2: Add dts bindings for PS/2

Introduction of generic device tree bindings for PS/2 devices

Signed-off-by: Francisco Munoz <[email protected]>

dts/bindings/ps2/microchip,xec-ps2.yaml

@@ -0,0 +1,19 @@
+# Copyright (c) 2019, Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+title: Microchip XEC PS/2
+
+description: >
+    This is a representation of the Microchip XEC PS/2 controller
+
+compatible: "microchip,xec-ps2"
+
+include: ps2.yaml
+
+properties:
+    reg:
+      required: true
+
+    interrupts:
+      required: true
+...

dts/bindings/ps2/ps2.yaml

@@ -0,0 +1,25 @@
+# Copyright (c) 2019, Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+title: PS/2 Base Structure
+
+description: >
+    This binding gives the base structures for all PS/2 devices
+
+include: base.yaml
+
+child:
+    bus: ps2
+
+properties:
+    "#address-cells":
+      type: int
+      required: true
+      description: should be 1.
+    "#size-cells":
+      type: int
+      required: true
+      description: should be 0.
+    label:
+      required: true
+