drm/nouveau/fbcon: make use of drm_fb_helper.dev

No need to store the pointer ourselves when it's already present in
the base struct.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
index da8fd5f..6a2b187 100644
--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
@@ -30,7 +30,7 @@ int
 nv04_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *region)
 {
 	struct nouveau_fbdev *nfbdev = info->par;
-	struct nouveau_drm *drm = nouveau_drm(nfbdev->dev);
+	struct nouveau_drm *drm = nouveau_drm(nfbdev->helper.dev);
 	struct nouveau_channel *chan = drm->channel;
 	int ret;
 
@@ -50,7 +50,7 @@ int
 nv04_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 {
 	struct nouveau_fbdev *nfbdev = info->par;
-	struct nouveau_drm *drm = nouveau_drm(nfbdev->dev);
+	struct nouveau_drm *drm = nouveau_drm(nfbdev->helper.dev);
 	struct nouveau_channel *chan = drm->channel;
 	int ret;
 
@@ -77,7 +77,7 @@ int
 nv04_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
 {
 	struct nouveau_fbdev *nfbdev = info->par;
-	struct nouveau_drm *drm = nouveau_drm(nfbdev->dev);
+	struct nouveau_drm *drm = nouveau_drm(nfbdev->helper.dev);
 	struct nouveau_channel *chan = drm->channel;
 	uint32_t fg;
 	uint32_t bg;
@@ -133,7 +133,7 @@ int
 nv04_fbcon_accel_init(struct fb_info *info)
 {
 	struct nouveau_fbdev *nfbdev = info->par;
-	struct drm_device *dev = nfbdev->dev;
+	struct drm_device *dev = nfbdev->helper.dev;
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_channel *chan = drm->channel;
 	struct nvif_device *device = &drm->device;