drm/i915: Be careful with non-disp bit in PMINTRMSK

Bit 31 in GEN6_PMINTRMSK is not an interrupt disable bit with gen8.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed