[Intel-gfx] [PATCH] drm/i915: Align initial plane backing objects correctly

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5754
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -4              275/275              271/275
ILK                 -1              310/310              309/310
SNB              +2                 320/346              322/346
IVB                 -2              380/384              378/384
BYT                                  296/296              296/296
HSW              +3-1              422/428              424/428
BDW                                  318/333              318/333
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*PNV  igt_gem_fence_thrash_bo-write-verify-none      PASS(5, M7)      FAIL(1, M7)
*PNV  igt_gem_fence_thrash_bo-write-verify-x      PASS(5, M7)      FAIL(1, M7)
*PNV  igt_gem_fence_thrash_bo-write-verify-y      PASS(6, M7)      FAIL(1, M7)
*PNV  igt_gem_fence_thrash_bo-write-verify-threaded-none      PASS(2, M7)      CRASH(1, M7)
 ILK  igt_drv_suspend_fence-restore-tiled2untiled      DMESG_WARN(2, M26)PASS(1, M26)      DMESG_WARN(1, M26)
*SNB  igt_kms_flip_bo-too-big      BLACKLIST(1, M35)      PASS(1, M35)
*SNB  igt_kms_flip_bo-too-big-interruptible      BLACKLIST(1, M35)      PASS(1, M35)
*IVB  igt_kms_cursor_crc_cursor-64x64-random      PASS(2, M4)      NO_RESULT(1, M4)
*IVB  igt_gem_partial_pwrite_pread_reads-snoop      PASS(2, M4)      NO_RESULT(1, M4)
*HSW  igt_gem_fenced_exec_thrash_no-spare-fences-busy-interruptible      PASS(2, M40)      NO_RESULT(1, M40)
*HSW  igt_kms_flip_bo-too-big      BLACKLIST(1, M40)      PASS(1, M40)
*HSW  igt_kms_flip_bo-too-big-interruptible      BLACKLIST(1, M40)      PASS(1, M40)
 HSW  igt_kms_flip_plain-flip-fb-recreate-interruptible      TIMEOUT(6, M40)PASS(5, M40)      PASS(1, M40)
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