drm/i915: Typo in #define

checkpatch complains about this define:

WARNING: space prohibited between function name and open parenthesis '('
+#define   GEN6_RENDER TIMEOUT_COUNTER_EXPIRED		(1 << 6)

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>