drm/i915: Check for platform specific GPIO config
Panel GPIO control should be done based on platform. Add a check to restrict VLV and CHT specific GPIO confirguration, so that they dont apply to other platforms. The VBT spec fails to mention the PMIC backlight control option is valid only for VLV/CHT, and the field may be set to "PMIC" for BXT even if PMIC is not desired or possible. Signed-off-by:Uma Shankar <uma.shankar@intel.com> Signed-off-by:
Vidya Srinivas <vidya.srinivas@intel.com> [Jani: amended commit message a bit and fixed indentation.] Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1486551058-22596-2-git-send-email-vidya.srinivas@intel.com
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