drm/amdgpu/powerplay/tonga: query supported pcie info from cgs (v2)

Rather than hardcode it.

v2: integrate spc fix from Rex

Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2015-11-11 20:58:55 -05:00
commit 834b694cc3