Driver is able to load soft pptable from smc bin file with this function. We
stored the soft pptable in the bottom of smc.bin that the version is v2.

v2: remove is_fw_v2_0 flag.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>