Adds TFABOOT support and allows to pick FMAN firmware on basis of boot source. Signed-off-by: Pankit Garg <pankit.garg@nxp.com> Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com> [YS: fix checkpatch issues] Reviewed-by: York Sun <york.sun@nxp.com>