[Intel-gfx] [PATCH] drm/i915: Allow legacy interface for legacy Y tiled display

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6113
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -2              272/272              270/272
ILK                 -1              302/302              301/302
SNB                                  303/303              303/303
IVB                                  338/338              338/338
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 gem_tiled_pread_pwrite      FAIL(3)PASS(7)      FAIL(1)PASS(1)
 PNV  igt at gem_userptr_blits@coherency-sync      CRASH(5)PASS(5)      CRASH(2)
*ILK  igt at gem_fenced_exec_thrash@no-spare-fences-busy-interruptible      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
*BYT  igt at gem_exec_bad_domains@conflicting-write-domain      PASS(8)      FAIL(1)PASS(1)
Note: You need to pay more attention to line start with '*'