[stable] drm/i915 patches fix Latitude E6410 video issues.

[Manoj Iyer]

Please consider the following upstream commits to stable 2.6.33.y

1. drm/i915: add PANEL_UNLOCK_REGS definition
    SHAID: 4a655f043160eeae447efd3be297b6b4c397a640
2. drm/i915: make sure eDP panel is turned on
    SHAID: 9934c132989d5c488d2e15188220ce240960ce96

Depends on

3. drm/i915: Rename intel_output to intel_encoder.
    SHAID: 21d40d37eca86872f2bf0af995809ebdef25c9d9


These patches fix video issues on Dell Latitude E6410. Reported in bugs

http://launchpad.net/bugs/578673
http://launchpad.net/bugs/561802

The patches apply cleanly to 2.6.33.y (see attachments), and they were 
tested against the latest Lucid kernel and reported to fix the 2 issues. 
Kernel was tested by user community, as well as, on hardware available at 
Canonical.

Regarding the issue with dim back-light on resume, Jesse wrote to me saying 
he suspects some other agent like firmware might be a suspect in zeroing 
it out before the driver saves it, ie driver seems to do the right thing.

Regards
Manoj Iyer
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