Simics command for single-thread mode.
Simics command for single-thread mode.

Change-Id: I74b49c7bd9647d31603a08ffbc14f21ef579cfc1
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/395
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>
Reviewed-by: CAMVAN T. NGUYEN <6ef8968941407f71237596b07aac3e0f61970ea0@us.ibm.com>
Reviewed-by: Andrew J. Geissler <c46de238cd554860f0bd4010b1729f1323facd9c@us.ibm.com>

Over-enthusiastic/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,open-power/hostboot,csmart/hostboot,alvintpwang/hostboot,alvintpwang/hostboot,csmart/hostboot,csmart/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,csmart/hostboot,csmart/hostboot,alvintpwang/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,alvintpwang/hostboot,open-power/hostboot