Self Restore: Changes for SMF and SPR self save.

Commit incorporates following changes:
    -   thread launching based on new self-save restore layout.
    -   self restore in UV mode, UV enter -  HV exit mode
    -   self restore in HV compatibility mode
    -   self save of SPRs
Key_Cronus_Test=PM_REGRESS

Change-Id: I1de20f69036d9bbc468ef2f5b1d700b2279592ba
Original-Change-Id: Id574e4ec03ba644cd59b82baba8c7a9066d80f0c
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66251
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Cronus HW CI <cronushw-ci+hostboot@us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Dev-Ready: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-by: RANGANATHPRASAD G. BRAHMASAMUDRA <prasadbgr@in.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>