CONFIG: Enable hyperthreading scheduler support

CONFIG: Enable hyperthreading scheduler support

BZ: 25012

Set CONFIG_SCHED_SMT=y

Change-Id: I927dc6f45181f8079914d6a1683ce3396e9ed198
Signed-off-by: Fei Yang <fei.yang@intel.com>
Reviewed-on: http://android.intel.com:8080/36809
Reviewed-by: Iyer, Sundar <sundar.iyer@intel.com>
Reviewed-by: Mansoor, Illyas <illyas.mansoor@intel.com>
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Ng, Cheon-woei <cheon-woei.ng@intel.com>
Reviewed-by: Zhang, Yanmin <yanmin.zhang@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>