drm/virtio: move drm_connector_to_virtio_gpu_output to virtgpu_display

That's the only file that uses it.
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20191219005733.18960-6-gurchetansingh@chromium.orgSigned-off-by: Gerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/virtio/virtgpu_display.c

@@ -43,6 +43,9 @@
 #define XRES_MAX  8192
 #define YRES_MAX  8192
 
+#define drm_connector_to_virtio_gpu_output(x) \
+	container_of(x, struct virtio_gpu_output, conn)
+
 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
 	.set_config             = drm_atomic_helper_set_config,
 	.destroy                = drm_crtc_cleanup,

drivers/gpu/drm/virtio/virtgpu_drv.h

@@ -133,8 +133,6 @@ struct virtio_gpu_output {
 };
 #define drm_crtc_to_virtio_gpu_output(x) \
 	container_of(x, struct virtio_gpu_output, crtc)
-#define drm_connector_to_virtio_gpu_output(x) \
-	container_of(x, struct virtio_gpu_output, conn)
 
 struct virtio_gpu_framebuffer {
 	struct drm_framebuffer base;