Support FSP SEEPROM device strings
Support FSP SEEPROM device strings

- Added FSP SEEPROM device string support to MRW parser
- Removed duplicate VMEM_ID attribute from MRW parser

Change-Id: Ibeaf852f778b7f2f2b21359783a918e05f3a005e
RTC: 36818
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/2668
Tested-by: Jenkins Server
Reviewed-by: Nicholas E. Bofferding <fb8db48116bc8a69e29dd8cdb037246f232f4af5@us.ibm.com>
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>

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