drm/nouveau: create function for "dealing" with gpu lockup

It's mostly a cleanup, but in nv50_fbcon_accel_init gpu lockup
message was printed, but HWACCEL_DISBALED flag was not set.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 44cbbee..0b05c86 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -64,8 +64,7 @@
 		return 0;
 
 	if (RING_SPACE(chan, 4)) {
-		NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-		info->flags |= FBINFO_HWACCEL_DISABLED;
+		nouveau_fbcon_gpu_lockup(info);
 		return 0;
 	}
 
@@ -86,8 +85,7 @@
 	}
 
 	if (ret) {
-		NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-		info->flags |= FBINFO_HWACCEL_DISABLED;
+		nouveau_fbcon_gpu_lockup(info);
 		return 0;
 	}
 
@@ -380,3 +378,12 @@
 
 	return 0;
 }
+
+void nouveau_fbcon_gpu_lockup(struct fb_info *info)
+{
+	struct nouveau_fbcon_par *par = info->par;
+	struct drm_device *dev = par->dev;
+
+	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
+	info->flags |= FBINFO_HWACCEL_DISABLED;
+}