drm/vmwgfx: Remove bogus crtc coords vs fb size check

Throw away the bugs crtc coords vs. fb size check. Crtc coords don't
define the viewport inside the fb, that's a job for the src coords,
which have been checked by the core already.

Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171101182920.14386-2-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

@@ -476,12 +476,6 @@ int vmw_du_primary_plane_atomic_check(struct drm_plane *plane,
 
 		vcs = vmw_connector_state_to_vcs(du->connector.state);
 
-		if ((dest.x2 > new_fb->width ||
-		     dest.y2 > new_fb->height)) {
-			DRM_ERROR("CRTC area outside of framebuffer\n");
-			return -EINVAL;
-		}
-
 		/* Only one active implicit framebuffer at a time. */
 		mutex_lock(&dev_priv->global_kms_state_mutex);
 		if (vcs->is_implicit && dev_priv->implicit_fb &&