drm/nouveau/fb: use correct ram oclass for nv1a hardware

commit 8613e731
Author: Ben Skeggs <bskeggs@redhat.com>
Date:   Mon Oct 21 08:50:25 2013 +1000

    drm/nouveau/fb: remove ram oclass argument from base fb constructor

Introduced a unfortunate regression by using nv10 ram oclass for nv1a
hardware, causing corruption and eventually system lockup.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74866Reported-by: John F. Godfrey <jfgodfrey@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Cc: stable@vger.kernel.org # 3.13+
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/core/subdev/fb/nv1a.c

@@ -36,7 +36,7 @@ nv1a_fb_oclass = &(struct nv04_fb_impl) {
 		.fini = _nouveau_fb_fini,
 	},
 	.base.memtype = nv04_fb_memtype_valid,
-	.base.ram = &nv10_ram_oclass,
+	.base.ram = &nv1a_ram_oclass,
 	.tile.regions = 8,
 	.tile.init = nv10_fb_tile_init,
 	.tile.fini = nv10_fb_tile_fini,