PRD: Better traces on getScom/putScom failures
PRD: Better traces on getScom/putScom failures

Change-Id: I9e00d50864fb7607ca33bca3bb0306fa6661ff18
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/32818
Reviewed-by: Brian J. Stegmiller <4c05ea37f9d6efb9a2c94995009b8b66580a4c01@us.ibm.com>
Reviewed-by: Benjamin J. Weisenbeck <5c9571551d3c5d31d5a99a7e8d72fcb5684103ff@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Zane C. Shelley <fc96e127d170d6ac0b2af86a8a56f95974ff36e8@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/32828

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot