Correctly size pa-features
Correctly size pa-features

Fixes open-power/hostboot#30

Change-Id: I24f02f83ce6689264502cc2cf3f8a4388d0e5b60
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/19903
Tested-by: Jenkins Server
Tested-by: Jenkins OP Build CI
Tested-by: Jenkins OP HW
Tested-by: FSP CI Jenkins
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>

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