etnaviv: drm: fix BO array leaks
Free the both arrays tracking BOs when the etna_cmd_stream is destroyed. CC: mesa-stable Signed-off-by:Lucas Stach <l.stach@pengutronix.de> Reviewed-by:
Christian Gmeiner <christian.gmeiner@gmail.com> Part-of: <mesa/mesa!20940> (cherry picked from commit 3156b15f)