bindings: Address dt-binding-check errors for memory-offline

Improve compliance with dt-schema.

Change-Id: Ia4ba5bdde5c479223df8eb4b2bf614214a3300b9
Signed-off-by: Patrick Daly <quic_pdaly@quicinc.com>

bindings/arm/msm/memory-offline.yaml

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/bindings/arm/msm/memory-offline.yaml#
+$id: http://devicetree.org/schemas/arm/msm/memory-offline.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Memory Offline Driver binding
@@ -29,14 +29,13 @@ properties:
 
   granule:
     $ref: '/schemas/types.yaml#/definitions/uint32'
-    maxItems: 1
     description:
       The minimum granule size in mega-bytes for memory onlining/offlining.
 
   offline-sizes:
-    $ref: '/schemas/types.yaml#/definitions/uint32-array'
+    $ref: '/schemas/types.yaml#/definitions/uint32-matrix'
     minItems: 1
-    description:
+    description: |
       Array of offlinable memory region sizes to apply to targets based on
       their DDR size.
 
@@ -72,6 +71,8 @@ required:
   - offline-sizes
   - mboxes
 
+additionalProperties: false
+
 examples:
   - |
     mem-offline {