drm/ttm: recognize ARM arch in ioprot handler

Nouveau can now be used on ARM, so add an ioprot handler for this
architecture.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
1 file changed