drm/i915/dp: abstract training pattern selection
Make it cleaner to add more checks in the function. No functional changes. Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> Reviewed-by: NSivakumar Thulasimani <sivakumar.thulasimani@intel.com> Cc: drm-intel-fixes@lists.freedesktop.org # dependency on the next patch Signed-off-by: NJani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1454667370-8001-1-git-send-email-jani.nikula@intel.com (cherry picked from commit 23a5110d) Signed-off-by: NJani Nikula <jani.nikula@intel.com>
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