drm/i915: Update ppgtt_init_ring() & context_enable() to take requests

The final step in removing the OLR from i915_gem_init_hw() is to pass the newly
allocated request structure in to each step rather than passing a ring
structure. This patch updates both i915_ppgtt_init_ring() and
i915_gem_context_enable() to take request pointers.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
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 1872c98..8fbdfc3 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -5084,7 +5084,7 @@
 				i915_gem_l3_remap(ring, j);
 		}
 
-		ret = i915_ppgtt_init_ring(ring);
+		ret = i915_ppgtt_init_ring(req);
 		if (ret && ret != -EIO) {
 			DRM_ERROR("PPGTT enable ring #%d failed %d\n", i, ret);
 			i915_gem_request_cancel(req);
@@ -5092,7 +5092,7 @@
 			goto out;
 		}
 
-		ret = i915_gem_context_enable(ring);
+		ret = i915_gem_context_enable(req);
 		if (ret && ret != -EIO) {
 			DRM_ERROR("Context enable ring #%d failed %d\n", i, ret);
 			i915_gem_request_cancel(req);