dt-bindings: soc: qcom: Add documentation for cpu vendor hooks

Snapshot the cpu vendor hooks bindings from qcom-6.1
commit 9dd5d1fa1 ("Merge "ARM: dts: msm: Add phandle for default CMA
area"").

Change-Id: I16c084ed78594bbc0668e2f586500088c101cea4
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

bindings/soc/qcom/qcom,cpu-vendor-hooks.yaml

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/qcom/qcom,cpu-vendor-hooks.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm Technologies, Inc. CPU Vendor Hoooks Binding
+
+maintainers:
+  - Melody Olvera <quic_molvera@quicinc.com>
+
+description: |
+  CPU Vendor Hook driver is used to register CPU specific vendor hooks with
+  core kernel to extend functionlaity.
+
+properties:
+  compatible:
+    items:
+      - const: qcom,cpu-vendor-hooks
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    vendor_hooks: qcom,cpu-vendor-hooks {
+        compatible = "qcom,cpu-vendor-hooks";
+    };