drm/i915/vlv: Make intel_crt_reset() per-encoder

drm/i915/vlv: Make intel_crt_reset() per-encoder

commit 4570d833390b10043d082fe535375d4a0e071d9c upstream.

This lets call intel_crt_reset() in contexts where IRQs are disabled and
as such, can't hold the locks required to work with the connectors.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Lyude <cpaul@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 28cf71ce3e206db1c3f30b3da31e7b48b2269e4c)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>