[TF-M] TF-M Profile Small patches merged

Hi all,

TF-M Profile Small patches are merged in TF-M master branch. Thanks a lot for all your review, comments and support. I'd appreciate it if you could feedback and share ideas while enabling Profile Small in your actual use cases. If there is any issue, please feel free to let us know. Thank you.

The next step will bring in symmetric key algorithm based Initial Attestation and then Profile Small can have a full set of features.

Best regards, Hu Ziji