dt-bindings: Add device-tree bindings for AON event bridge driver

Add snapshot of device-tree bindings for AON event bridge and
respective rpmsg drivers from msm-5.15.c2 in YAML format.

Snapshot is taken from msm-5.15.c2 kernel commit 95ffcf910eee
("ARM: dts: msm: add aon-rma glink node").

Change-Id: I695cab16e872800d558ccf269c1cb32bbe9bb2f0
Signed-off-by: Koushik Immadisetty <quic_kimmadis@quicinc.com>

bindings/soc/qcom/qcom,slate_events_bridge.yaml

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,slate_events_bridge.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Slate Events Bridge Driver
+
+maintainers:
+  - Praveen koya <quic_pkoya@quicinc.com>
+
+description: |
+  slate_events_bridge driver provides a set of apis for clients
+  to receive events from slate co processor. The events are
+  received over Glink.
+
+properties:
+  compatible:
+    const: qcom,slate-events-bridge
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    qcom,slate-events-bridge {
+        compatible = "qcom,slate-events-bridge";
+    };

bindings/soc/qcom/qcom,slate_events_bridge_rpmsg.yaml

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,slate_events_bridge_rpmsg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Slate Events Bridge RPMSG Driver
+
+maintainers:
+  - Praveen koya <quic_pkoya@quicinc.com>
+
+description: |
+  slate_events_bridge_rpmsg driver provides functionality
+  to send and receive data over Glink from slate co processor.
+
+properties:
+  compatible:
+    const: qcom,slate-events-bridge-rpmsg
+
+  qcom,glink-channels:
+    $ref: '/schemas/types.yaml#/definitions/string'
+    description: specifies the glink channel name
+
+  qcom,glinkpkt-edge:
+    $ref: '/schemas/types.yaml#/definitions/string'
+    description: specifies the glink edge to match
+
+  intents:
+    description: specifies the size and count of intents to glink
+
+required:
+  - compatible
+  - qcom,glink-channels
+  - qcom,glinkpkt-edge
+
+additionalProperties: false
+
+examples:
+  - |
+    qcom,slate-events-bridge-rpmsg {
+        compatible = "qcom,slate-events-bridge-rpmsg";
+        qcom,glink-channels = "slate_events";
+        qcom,glinkpkt-edge = "slate";
+        intents = <0x200 5>;
+    };
+