PRD: refactored prdf_fsp_only.mk
PRD: refactored prdf_fsp_only.mk

Change-Id: I90206c724c58019a256f22000fcfacff96efd201
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/14342
Tested-by: Jenkins Server
Reviewed-by: Christopher T. Phan <f1526e3d74f0373253bcddf8332b061da0ea5be7@us.ibm.com>
Reviewed-by: Sachin Gupta <285b19a698aa558fba6ab25cf25b393d072fd749@in.ibm.com>
Reviewed-by: Bilicon Patil <b426c6782433157989ab161e7b15e96223b19a86@in.ibm.com>
Reviewed-by: Prem Shanker Jha <3a412e33a2e075117b5262bcf2504c145441bf2a@in.ibm.com>
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>
Reviewed-by: Zane Shelley <fc96e127d170d6ac0b2af86a8a56f95974ff36e8@us.ibm.com>
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/14489

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