add comments for BEAM errors
add comments for BEAM errors

Change-Id: I39444e50e96c40718c76fce6a3931cdb84557279
RTC: 127549
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/17389
Tested-by: Jenkins Server
Reviewed-by: Dhruvaraj Subhashchandran <19c03e3300faf6397505c2237d88ece502fa4419@in.ibm.com>
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>

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