HSD #14013247745-1: firmware: stratix10-svc: extend for single certificate

commit  e838f3b398902cd445b57db140068945de9148b3 from
https://github.com/altera-opensource/linux-socfpga.git

Extend Intel service layer driver to support a single certificate to allow
unauthenticated updates to the PTS counter.

PTS = Pseudo Time Stamp

Signed-off-by: Richard Gong <richard.gong@intel.com>
Signed-off-by: Meng Li <Meng.Li@windriver.com>