fix(build): fix incremental build issue with realm payload

On incremental build the tftf.bin gets appended again with realm payload
causing the old realm payload to be loaded during boot. This fix
recreates base tftf.bin for every build before appending it with the
realm payload.

This also fixes makefile warnings seen when ENABLE_REALM_PAYLOAD_TESTS=1
by removing duplicate MAKE_IMG,realm calls.

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: Iaedfb27572a034d70ec2a402dc3074b0d4b8c660
1 file changed