[TF-M] TF-M static check for each patch has enabled on openCI

Hi,

The static check now enabled on openCI per the TF-M open tech forum discussion on 4th February 2021. The slides and video can be found from herehttps://www.trustedfirmware.org/meetings/tf-m-technical-forum/. Please let us know if you have any further concerns about the checks after enabled.

A minor change to the slides is the cppcheck version has updated from 1.81 to 2.3.

Thanks Karl