drm/panel: simple: Add TI nspire panel bindings

Add bindings for the TI NSPIRE simple display panels.

Cc: [e-mail]
Reviewed-by: Rob Herring <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/display/panel/ti,nspire.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/ti,nspire.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments NSPIRE Display Panels
+
+maintainers:
+  - Linus Walleij <[e-mail]>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ti,nspire-cx-lcd-panel
+      - ti,nspire-classic-lcd-panel
+  port: true
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    panel {
+        compatible = "ti,nspire-cx-lcd-panel";
+        port {
+            panel_in: endpoint {
+                remote-endpoint = <&pads>;
+            };
+        };
+    };