drm/i915: Stash hpd status bits under dev_priv
Instead of constnantly having to figure out which hpd status bit array to use let's store them under dev_priv. Should perhaps take this further and stash even more stuff to make the hpd handling more abstract yet. v2: Remeber cnp (Imre) Add MISSING_CASE() for unknown PCHs (Imre) Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200507114808.6150-1-ville.syrjala@linux.intel.comReviewed-by: Imre Deak <imre.deak@intel.com>
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