dt-bindings: touchscreen: rename maxim,max11801.yaml to trivial-touch.yaml

Rename maxim,max11801.yaml to trivial-touch.yaml for simple i2c touch
controller with one interrupt and common touch properties.

Signed-off-by: Frank Li <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

Documentation/devicetree/bindings/input/touchscreen/maxim,max11801.yaml Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml

···
 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/input/touchscreen/maxim,max11801.yaml#
+$id: http://devicetree.org/schemas/input/touchscreen/trivial-touch.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: MAXI MAX11801 Resistive touch screen controller with i2c interface
+title: Trivial touch screen controller with i2c interface
 
 maintainers:
   - Frank Li <[e-mail]>
 
 properties:
   compatible:
-    const: maxim,max11801
+    enum:
+      # MAXI MAX11801 Resistive touch screen controller with i2c interface
+      - maxim,max11801
 
   reg:
     maxItems: 1