gen_contents.py: fix GPT file names to use .bin extension

Correct the filenames for GPT partitions in the generated contents.xml
to use `.bin` instead of `.xml` to match with the actual content being
generated at build time and to ensure the correct files are flashed.

Signed-off-by: Viswanath Kraleti <[email protected]>

Author: vkraleti

gen_contents.py

@@ -78,10 +78,10 @@ def _add_file_elements(parent_element, pathname, file_path_flavor=None):
             for PhysicalPartitionNumber in range(0, len(PhyPartition)):
                 new_download_file = ET.SubElement(build, "download_file")
                 new_download_file.set("storage_type", DefaultStorageType)
-                _add_file_elements(new_download_file, 'gpt_main%d.xml' % (PhysicalPartitionNumber))
+                _add_file_elements(new_download_file, 'gpt_main%d.bin' % (PhysicalPartitionNumber))
                 new_download_file = ET.SubElement(build, "download_file")
                 new_download_file.set("storage_type", DefaultStorageType)
-                _add_file_elements(new_download_file, 'gpt_backup%d.xml' % (PhysicalPartitionNumber))
+                _add_file_elements(new_download_file, 'gpt_backup%d.bin' % (PhysicalPartitionNumber))
 
         PartitionFile = build.find('partition_file')
         if PartitionFile is not None: