[Intel-gfx] [PATCH] drm/i915: Support for higher DSI clk

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5839
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -1              282/282              281/282
ILK                                  308/308              308/308
SNB                 -1              326/326              325/326
IVB                                  379/379              379/379
BYT                                  294/294              294/294
HSW                                  387/387              387/387
BDW                 -1              316/316              315/316
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
 PNV  igt_gem_userptr_blits_minor-unsync-normal      DMESG_WARN(1)PASS(2)      DMESG_WARN(1)PASS(1)
*SNB  igt_kms_pipe_crc_basic_read-crc-pipe-A      PASS(3)      DMESG_WARN(1)PASS(1)
*BDW  igt_gem_gtt_hog      PASS(14)      DMESG_WARN(1)PASS(1)
Note: You need to pay more attention to line start with '*'