drm/i915/dp: use the sink rates array for max sink rates
Looking at DPCD DP_MAX_LINK_RATE may be completely bogus for eDP 1.4 which is allowed to use link rate select method and have 0 in max link rate. With this change, it makes sense to store the max rate as the actual rate rather than as a bw code. Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: NJani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/3e8baadb406d59f414cab36fed9f0b35d207fde5.1491485983.git.jani.nikula@intel.com
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