fix(versal): print proper atf handoff source

Versal uses PLM in the boot flow and printing FSBL in the log for
handoff parameters is misleading. Print proper source of TF-A
handoff parameters.

Change-Id: I331e2eac2f5d30beed8573940ae02094254a759b
Signed-off-by: Akshay Belsare <akshay.belsare@amd.com>
1 file changed