radeon: Remove superfluous parentheses.

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>
radeon: Add missing header includes.

unistd.h for close() and xf86drm.h for drmOpen().

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>
nouveau: expose NV_PERFCTR_CLASS using a ioctl

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>