drm/i915: add GEN5_IRQ_FINI

Same as the _INIT macro: the goal is to reuse the GEN8 macros, but
there are still some slight differences.

v2: - Rebase.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed