[Intel-gfx] back light conflict i915 vs dell-laptop

[Patrick Schaaf]

The dell laptop backlight problems I reported previously, are fixed with Indan's
patch found here:

https://bugzilla.kernel.org/show_bug.cgi?id=23472#c32

which disables the is_backlight_combination_mode() function by making it
return 0 immediately.

I'm running 2.6.37 with that patch applied, and the laptop is symptom
free now.

best regards
  Patrick