GitLab

DRVSEL and SMPLSEL needs to be set so that it can properly go into full
speed mode. This needs to be done in EL3 as the registers are secured.
Signed-off-by: Tien Hock Loh <tien.hock.loh@intel.com>
Change-Id: Ia2f348e7742ff7b76da74d392ef1ce71e2f41677