SQUAD : Adding a memory footprint gathering script launched from ci

This patch sets up the TFM memory footprint tracking using SQUAD and CI.
A python script is launched by the ci build-config pipeline if it has
been started by a nightly build. This python script sends bl2.axf and
tfm_s.axf sizes to a SQUAD interface.

Signed-off-by: Hugo L'Hostis <hugo.lhostis@arm.com>
Change-Id: Ied2df3f82b9f56589777829ec793c3260c75d374
3 files changed