firmware header information is printed for direct fw loading but not
added for psp fw loading yet

v2: squash in warning fix (Alex)
Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>