[Intel-gfx] [PATCH] drm/i915/skl: Support for 90/270 rotation

[shuang.he at intel.com]

Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6135
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -1              272/272              271/272
ILK                                  302/302              302/302
SNB                                  303/303              303/303
IVB                 -1              338/338              337/338
BYT                 -1              287/287              286/287
HSW                                  361/361              361/361
BDW                                  308/308              308/308
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
 PNV  igt at gen3_render_tiledx_blits      FAIL(7)PASS(6)      FAIL(2)
*IVB  igt at gem_storedw_batches_loop@secure-dispatch      PASS(2)      DMESG_WARN(1)PASS(1)
(dmesg patch applied)drm:i915_hangcheck_elapsed[i915]]*ERROR*Hangcheck_timer_elapsed...blitter_ring_idle at Hangcheck timer elapsed... blitter ring idle
*BYT  igt at gem_exec_bad_domains@conflicting-write-domain      PASS(20)      FAIL(1)PASS(1)
Note: You need to pay more attention to line start with '*'