[TF-A] Changelog for v2.13 Release

Hello Everyone,

Ahead of the TF-A v2.13 release, please review the autogenerated changelog for your platform. It’s built from the commit messages of all patches merged since v2.12. If you spot anything that needs a quick manual tweak, just let us know.

Patch: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/38170

Rendered Version: https://ci-builds.trustedfirmware.org/static-files/Jr7PSOAIj0pMAfjvJ-b7Y7G7p...

-- Thanks, Govindraj R