bindings: Adding bindings to support vm on Sun

Adding bindings to support vm on Sun.

This is snapshot of bindings from 'commit 999a92cd8b38
("Merge "ARM: dts: qcom: Add platform support for VMs on
Cliffs"")' from device tree project msm-6.1 branch.

Change-Id: I47eda741b3451d38d215f7d95505a2bb4dd86565
Signed-off-by: Meena Pasumarthi <quic_pasumart@quicinc.com>
Signed-off-by: Sahitya Tummala <quic_stummala@quicinc.com>

bindings/soc/qcom/qcom,gh-dbl.yaml

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,gh-dbl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QCT Gunyah Hypervisor Doorbell Test Driver
+
+maintainers:
+  - Murali Nalajala <quic_mnalajal@quicinc.com>
+  - Satya Durga Srinivasu Prabhala <quic_satyap@quicinc.com>
+
+description: |
+  The Gunyah Hypervisor Test Driver is used to validate gunyah hypervisor
+  functionality. It includes test node for gunyah doorbell for vms.
+
+properties:
+  compatible:
+    const: qcom,gh-dbl
+
+examples:
+  - |
+    qcom,test-dbl {
+      compatible = "qcom,gh-dbl";
+      qcom,label = <0x4>;
+    };

bindings/soc/qcom/qcom,logbuf_vendor_hooks.yaml

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/qcom/qcom,logbuf_vendor_hooks.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm Technologies, Inc. Logbuf Vendor Hooks Binding
+
+description: |
+  Logbuf Vendor Hook driver is used to register logbuf specific vendor hooks
+  with core kernel to copy initial kernel log to a separate buffer even though
+  kernel log gets overflowed.
+
+properties:
+  compatible:
+    items:
+      - const: qcom,logbuf-vendor-hooks
+
+required:
+  - compatible
+
+examples:
+  - |
+    logbuf: qcom,logbuf-vendor-hooks {
+        compatible = "qcom,logbuf-vendor-hooks";
+    };