[Intel-gfx] [PATCH] drm/i915: Dell Chromebook 11 has PWM backlight

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5794
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  277/277              277/277
ILK                                  313/313              313/313
SNB                                  309/309              309/309
IVB                                  382/382              382/382
BYT                                  296/296              296/296
HSW                                  425/425              425/425
BDW                 -1              318/318              317/318
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*BDW  igt_gem_gtt_hog      PASS(12)      DMESG_WARN(1)PASS(1)
Note: You need to pay more attention to line start with '*'