[Intel-gfx] [PATCH] drm/i915: Reduce frequency of unspecific HSW reg debugging

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6023
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -4              272/272              268/272
ILK                                  303/303              303/303
SNB                                  304/304              304/304
IVB                                  344/344              344/344
BYT                                  287/287              287/287
HSW                                  362/362              362/362
BDW                                  308/308              308/308
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
 PNV  igt_gem_userptr_blits_minor-unsync-interruptible      DMESG_WARN(1)PASS(1)      DMESG_WARN(1)PASS(1)
 PNV  igt_gen3_render_mixed_blits      FAIL(1)PASS(2)      FAIL(2)
*PNV  igt_gen3_render_tiledy_blits      PASS(2)      FAIL(2)
*PNV  igt_gem_tiled_pread_pwrite      PASS(1)      FAIL(2)
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