releasetools: merge_target_files.py should handle new contents of dynamic_partitions_info.txt

With a recent change (cb8e2755ff610bc856fecf5518e63767abe626bf) to the
generation of dynamic_partitions_info.txt,
process_dynamic_partitions_info_txt() needs a corresponding update.

Change-Id: I30ec92176fd9cd737160b579214eb5b3d6a44c10
diff --git a/tools/releasetools/merge_target_files.py b/tools/releasetools/merge_target_files.py
index 544f996..e588fb5 100755
--- a/tools/releasetools/merge_target_files.py
+++ b/tools/releasetools/merge_target_files.py
@@ -481,9 +481,9 @@
   merged_dynamic_partitions_dict = common.MergeDynamicPartitionInfoDicts(
       framework_dict=framework_dynamic_partitions_dict,
       vendor_dict=vendor_dynamic_partitions_dict,
-      # META/dynamic_partitions_info.txt does not use dynamic_partition_list.
-      include_dynamic_partition_list=False,
-      size_suffix='_size',
+      size_prefix='super_',
+      size_suffix='_group_size',
+      list_prefix='super_',
       list_suffix='_partition_list')
 
   output_dynamic_partitions_info_txt = os.path.join(