D22211: [platforms/drm] Refactor out Edid class

zzag created this revision.
zzag added a reviewer: KWin.
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REVISION SUMMARY
  The new class is responsible for parsing EDID blobs. It has pretty
  straightforward API: you hand blob data to the constructor and after
  that you're ready to query parsed data, e.g. physical size, etc.
  
  The main reason to extract EDID parsing code into a class is to clean up
  drm_output.cpp a bit.

TEST PLAN
  Compiles, the DRM platform still works.

REPOSITORY
  R108 KWin

BRANCH
  refactor-edid

REVISION DETAIL
  https://phabricator.kde.org/D22211

AFFECTED FILES
  plugins/platforms/drm/CMakeLists.txt
  plugins/platforms/drm/drm_output.cpp
  plugins/platforms/drm/drm_output.h
  plugins/platforms/drm/edid.cpp
  plugins/platforms/drm/edid.h

To: zzag, #kwin
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