drm/i915: Pass the correct plane index to _intel_compute_tile_offset()

intel_fill_fb_info() should pass the correct plane index to
_intel_compute_tile_offset() once we start to care about the AUX
surface.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NImre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170307194210.13400-5-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/intel_display.c

@@ -2467,7 +2467,7 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
 		intel_fb->normal[i].y = y;
 
 		offset = _intel_compute_tile_offset(dev_priv, &x, &y,
-						    fb, 0, fb->pitches[i],
+						    fb, i, fb->pitches[i],
 						    DRM_ROTATE_0, tile_size);
 		offset /= tile_size;