ci: build all errata

Add TF build config and Coverity option to build all available CPUs
with all errata on the FVP platform.

Change-Id: Ibf87726e597f10b7c00b2217ac258cd1dde764ee
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
(cherry picked from commit dff55c91e9ad69348f0403b4fda64758ff81cd87)
3 files changed