[Intel-gfx] reduced LLC caching series

[Michael Larabel]

Eric & Chris,

For those interested, here's some of my test results of the LLC caching 
patch-set compared to a vanilla 2.6.38 and 2.6.39-rc1 on two SNBs. They 
just show some nice gains across the board and I haven't hit any issues 
with the patches.

Core i3 2100:
http://openbenchmarking.org/result/1103303-GR-INTELLCCC18&obr_ab=1

Core i5 2500K:
http://openbenchmarking.org/result/1103303-GR-INTELLCCC27&obr_ab=1

-- Michael