[Intel-gfx] [PATCH 5/5] drm/i915: Initialize all contexts

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5961
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -1              275/275              274/275
ILK                                  303/303              303/303
SNB                                  279/279              279/279
IVB                                  343/343              343/343
BYT                                  287/287              287/287
HSW                                  361/361              361/361
BDW                                  308/308              308/308
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*PNV  igt_gem_userptr_blits_minor-unsync-interruptible      PASS(2)      DMESG_WARN(1)PASS(1)
Note: You need to pay more attention to line start with '*'