drm/i915: Zap call to drm_plane_helper_disable, v2.
drm/i915: Zap call to drm_plane_helper_disable, v2.

The primary plane can still be configured when crtc is off,
furthermore this is also a noop now that affected planes are
added on modesets.

Changes since v1:
- Move commit so no frontbuffer_bits warnings are generated.

Signed-off-by: Maarten Lankhorst <743c2818a341d71b99ed2b566f9f80c2fc288f93@linux.intel.com>
Reviewed-by: Matt Roper <f1605a76cb9f6387d99228a0a9260318379b62de@intel.com>
Signed-off-by: Jani Nikula <ba783f3beccaedfda693f41a15407d612a629408@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs