[Intel-gfx] [PATCH] drm/i915: add turbo boost trace point

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
-------------------------------------Summary-------------------------------------
Platform: baseline_drm_intel_nightly_pass_rate->patch_applied_pass_rate
BYT: pass/total=290/290->290/290
PNV: pass/total=362/362->362/362
ILK: pass/total=381/381->379/381
IVB: pass/total=522/559->522/559
SNB: pass/total=444/444->444/444
HSW: pass/total=595/595->595/595
BDW: pass/total=436/436->436/436
-------------------------------------Detailed-------------------------------------
test_platform: test_suite, test_case, result_with_drm_intel_nightly(count, machine_id...)...->result_with_patch_applied(count, machine_id)...
ILK: Intel_gpu_tools, igt_kms_flip_flip-vs-wf_vblank-interruptible, DMESG_WARN(2, M26)PASS(2, M37M26) -> DMESG_WARN(1, M26)PASS(3, M26)
ILK: Intel_gpu_tools, igt_kms_flip_single-buffer-flip-vs-dpms-off-vs-modeset, DMESG_WARN(1, M26)PASS(3, M37M26) -> DMESG_WARN(1, M26)PASS(3, M26)