[Intel-gfx] [PATCH 4/4] drm/i915: Subsume intel_ctx_submit_request in to drm_i915_gem_request

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5587
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  353/353              353/353
ILK                                  200/200              200/200
SNB                                  400/422              400/422
IVB                                  487/487              487/487
BYT                                  296/296              296/296
HSW                 -1              487/508              486/508
BDW                                  401/402              401/402
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
 HSW  igt_kms_flip_event_leak      NSPT(2, M19)PASS(1, M19)      NSPT(1, M19)
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