Support tool that can package UCD* flash images into a binary

- Implements new tool that takes UCD* flash images, aggregates them together,
and puts a TOC on the front.  Supported UCD models include UCD9090 and UCD90120A
- Distributes the tool to FSP and OpenPOWER trees

Change-Id: I21af0d0dc5b9234d9be50227c2752a136bb2aad6
RTC: 201992
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/71548
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Ilya Smirnov <ismirno@us.ibm.com>
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>