drm/amdgpu: use the ring name for debugfs (v2)

Instead of hard coding just another name in the ring code.

v2: squash in Tom's rebase fix

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 files changed