[Intel-gfx] [PATCH] drm/atomic: Clear crtcs, connectors and planes when clearing state

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6090
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  270/270              270/270
ILK                 -1              303/303              302/303
SNB                                  304/304              304/304
IVB                                  337/337              337/337
BYT                                  287/287              287/287
HSW                 -1              361/361              360/361
BDW                                  309/309              309/309
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*ILK  igt at gem_unfence_active_buffers      PASS(2)      DMESG_WARN(1)PASS(1)
(dmesg patch applied)drm:i915_hangcheck_elapsed[i915]]*ERROR*Hangcheck_timer_elapsed...bsd_ring_idle at Hangcheck timer elapsed... bsd ring idle
*HSW  igt at gem_storedw_loop_bsd      PASS(2)      DMESG_WARN(1)PASS(1)
(dmesg patch applied)drm:i915_hangcheck_elapsed[i915]]*ERROR*Hangcheck_timer_elapsed...bsd_ring_idle at Hangcheck timer elapsed... bsd ring idle
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