[Intel-gfx] [PATCH] drm/i915/bxt: WA for swapped HPD pins in A stepping

[shuang.he at intel.com]

Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6870
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
ILK                 -1              296/296              295/296
SNB                 -1              316/316              315/316
IVB                 -1              343/343              342/343
BYT                 -3              286/286              283/286
HSW                 -1              379/379              378/379
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*ILK  igt at gem_reg_read      PASS(1)      NRUN(1)
*SNB  igt at gem_reg_read      PASS(1)      INIT(1)
*IVB  igt at gem_reg_read      PASS(1)      NRUN(1)
*BYT  igt at drm_read@short-buffer-block      PASS(1)      FAIL(1)
*BYT  igt at gem_partial_pwrite_pread@reads-uncached      PASS(1)      FAIL(1)
*BYT  igt at gem_reg_read      PASS(1)      INIT(1)
*HSW  igt at gem_reg_read      PASS(1)      INIT(1)
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