dt-bindings: Add devicetree bindings

Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").

Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

bindings/nvmem/nvmem-consumer.yaml

@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/nvmem-consumer.yaml#
+$schema: http://devicetree.org/meta-schemas/base.yaml#
+
+title: NVMEM (Non Volatile Memory) Consumer
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+select: true
+
+properties:
+  nvmem:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      List of phandle to the nvmem providers.
+
+  nvmem-cells:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      List of phandle to the nvmem data cells.
+
+  nvmem-names:
+    description:
+      Names for the each nvmem provider.
+
+  nvmem-cell-names:
+    description:
+      Names for each nvmem-cells specified.
+
+dependencies:
+  nvmem-names: [ nvmem ]
+  nvmem-cell-names: [ nvmem-cells ]
+
+additionalProperties: true
+
+examples:
+  - |
+    tsens {
+        /* ... */
+        nvmem-cells = <&tsens_calibration>;
+        nvmem-cell-names = "calibration";
+    };