PM: Fix missing init step in proc_get_mvpd_data

  -Older P9 chips (DD1.0) have incorrect data for
   the ultra turbo sort.  The missing init function
   primes some variables that prevent data from being
   looked at

Change-Id: Id5184e87d29a0cbb798e0c984dbfbc02865e071d
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/42856
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Brian T. Vanderpool <vanderp@us.ibm.com>
Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/42864
Reviewed-by: Hostboot Team <hostboot@us.ibm.com>
Reviewed-by: Dean Sanner <dsanner@us.ibm.com>
Tested-by: Dean Sanner <dsanner@us.ibm.com>

src/import/chips/p9/procedures/hwp/pm/p9_pstate_parameter_block.C

@@ -958,6 +958,7 @@ proc_get_mvpd_data(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
     do
     {
         // initialize
+        FAPI_TRY(proc_get_attributes(i_target, &attr), "proc_get_mvpd_data: Get attributes function failed");
         *o_present_chiplets    = 0;
 
         // -----------------------------------------------------------------