drm/i915: Rename intel_{enable, disable}_plane to intel_{enable, disable}_primary_plane
drm/i915: Rename intel_{enable, disable}_plane to intel_{enable, disable}_primary_plane

The new names make it clearer which plane we're talking about.

Signed-off-by: Ville Syrjälä <cd6e8d405ca90be3a03d5427c5b24fbd2d68dcc4@linux.intel.com>
Reviewed-by: Chris Wilson <711c73f64afdce07b7e38039a96d2224209e9a6c@chris-wilson.co.uk>
[danvet: Resolve small conflict with the haswell_crtc_disable_planes
extraction.]
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

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