feat(amd): populate handoff from TL

Handoff structures are populated by executable entry point
information tag based bl32/bl33 entries present in transfer list.

The upstream code is having problem with the last TL entry
particularly when the tags for two entries are same.
While tlc tool dumps all entries correctly, transfer_list_dump() in
upstream code does not provide information about the last entry in TL.

Enabling TRANSFER_LIST also enables BL1_SOURCES and BL2_SOURCES in
transfer_list.mk thereby enabling bl1/bl2 builds.
bl1/bl2 builds are disabled by turning off NEED_BL1/NEED_BL2
build flags.

Change-Id: I55ddccc1ab266cc5a609423d304a5e5c282e17f6
Signed-off-by: Amit Nagal <amit.nagal@amd.com>
4 files changed