[Intel-gfx] [PATCH 5/5] drm/i915/skl: Deinit/init the display at suspend/resume

[shuang.he at intel.com]

Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6443
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  234/234              234/234
ILK                                  262/262              262/262
SNB                 -1              282/282              281/282
IVB                                  300/300              300/300
BYT                                  254/254              254/254
BDW                 -1              275/275              274/275
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
 SNB  igt at pm_rpm@dpms-mode-unset-non-lpsp      DMESG_WARN(16)PASS(1)      DMESG_WARN(1)
(dmesg patch applied)WARNING:at_drivers/gpu/drm/i915/intel_uncore.c:#assert_device_not_suspended[i915]()@WARNING:.* at .* assert_device_not_suspended+0x
*BDW  igt at gem_flink_race@flink_name      PASS(2)      DMESG_WARN(1)
(dmesg patch applied)WARNING:at_drivers/gpu/drm/i915/intel_display.c:#assert_plane[i915]()@WARNING:.* at .* assert_plane
assertion_failure at assertion failure
WARNING:at_drivers/gpu/drm/drm_irq.c:#drm_wait_one_vblank[drm]()@WARNING:.* at .* drm_wait_one_vblank+0x
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