Integrate mss_eff_config HWP and adjust ISDIMM workarounds

Change-Id: I6d55eaf7c32de6ff116d45074e65516597711761
RTC: 117484
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/14478
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: William H. Schwartz <whs@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>