dt-bindings: drm/bridge: MHDP8546 bridge binding changes for HDCP

Add binding changes for HDCP in the MHDP8546 DPI/DP bridge binding.

Signed-off-by: Parshuram Thombare <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Signed-off-by: Robert Foss <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml

···
 
   reg:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
     items:
       - description:
           Register block of mhdptx apb registers up to PHY mapped area (AUX_CONFIG_P).
···
           included in the associated PHY.
       - description:
           Register block for DSS_EDP0_INTG_CFG_VP registers in case of TI J7 SoCs.
+      - description:
+          Register block of mhdptx sapb registers.
 
   reg-names:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
     items:
       - const: mhdptx
       - const: j721e-intg
+      - const: mhdptx-sapb
 
   clocks:
     maxItems: 1
···
       properties:
         reg:
           minItems: 2
+          maxItems: 3
         reg-names:
           minItems: 2
+          maxItems: 3
     else:
       properties:
         reg:
-          maxItems: 1
+          minItems: 1
+          maxItems: 2
         reg-names:
-          maxItems: 1
+          minItems: 1
+          maxItems: 2
 
 required:
   - compatible