drm/i915: Update ring->sync_to() to take a request structure

Updated the ring->sync_to() implementations to take a request instead of a ring.
Also updated the tracer to include the request id.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
[danvet: Rebase since I didn't merge the patch which added ->uniq.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 339799c..ae9e5ec 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3139,8 +3139,8 @@
 				return ret;
 		}
 
-		trace_i915_gem_ring_sync_to(from, to, from_req);
-		ret = to->semaphore.sync_to(to, from, seqno);
+		trace_i915_gem_ring_sync_to(*to_req, from, from_req);
+		ret = to->semaphore.sync_to(*to_req, from, seqno);
 		if (ret)
 			return ret;