[Intel-gfx] [PATCH v2 5/5] drm/i915/skl: Updated the gen9_enable_rps function

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5789
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -4              277/277              273/277
ILK                                  313/313              313/313
SNB                 -1              309/309              308/309
IVB                 -1              382/382              381/382
BYT                                  296/296              296/296
HSW                 -2              425/425              423/425
BDW                 -1              318/318              317/318
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*PNV  igt_gem_fence_thrash_bo-write-verify-none      NRUN(1)PASS(3)      FAIL(1)NRUN(1)
*PNV  igt_gem_fence_thrash_bo-write-verify-x      PASS(4)      FAIL(1)PASS(1)
*PNV  igt_gem_fence_thrash_bo-write-verify-y      NO_RESULT(1)PASS(3)      FAIL(1)PASS(1)
 PNV  igt_gem_userptr_blits_coherency-sync      NO_RESULT(1)CRASH(1)PASS(3)      CRASH(1)PASS(1)
*SNB  igt_kms_pipe_crc_basic_read-crc-pipe-B      PASS(2)      TIMEOUT(1)PASS(1)
*IVB  igt_gem_pwrite_pread_uncached-copy-performance      PASS(2)      DMESG_WARN(1)PASS(1)
*HSW  igt_gem_pwrite_pread_snooped-copy-performance      PASS(2)      DMESG_WARN(1)PASS(1)
*HSW  igt_kms_flip_dpms-off-confusion      PASS(2)      TIMEOUT(1)PASS(1)
*BDW  igt_gem_gtt_hog      PASS(7)      DMESG_WARN(1)PASS(1)
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