To be compatible with legacy IFWI, driver needs to carry legacy tOS and
query pmfw version to load them accordingly.

Add psp_firmware_header_v2_1 to handle the combined sos binary.

Double the sos count limit for the case of aux sos fw packed.

v2: pass the correct fw_bin_desc to parse_sos_bin_descriptor
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>