[Intel-gfx] [PATCH] drm/i915: Correct the variable holding the value for EOT to write

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5700
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  283/283              283/283
ILK                                  319/319              319/319
SNB                                  322/346              322/346
IVB              +2                 382/384              384/384
BYT                                  296/296              296/296
HSW              +1                 425/428              426/428
BDW                 -1              319/333              318/333
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
 IVB  igt_gem_pwrite_pread_snooped-pwrite-blt-cpu_mmap-performance      DMESG_WARN(10, M34M21)PASS(10, M4M34)      PASS(1, M34)
 IVB  igt_gem_storedw_batches_loop_normal      DMESG_WARN(7, M34M4M21)PASS(19, M34M4M21)      PASS(1, M34)
 HSW  igt_gem_pwrite_pread_snooped-pwrite-blt-cpu_mmap-performance      DMESG_WARN(2, M40)PASS(24, M40M20)      PASS(1, M40)
*BDW  igt_gem_fence_thrash_bo-write-verify-threaded-none      PASS(2, M30)      DMESG_WARN(1, M30)
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