drm/amdgpu: add gpu_info fw parse support for aldebaran

Parses asic configurations stored in gpu_info firmware and make them available
for driver to use.

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>