Store device's names and add more startup messages

drivers/bcm2835_videocore.c

@@ -113,6 +113,7 @@ int bcm2835_videocore_init_dev(struct fb *f, unsigned int color_depth) {
 }
 
 struct fb_dev videocore_dev = {
+	.name ="bcm2835_videocore",
 	.init = &bcm2835_videocore_init_dev
 };