grsecurity-2.2.2-2.6.38.6-201105171931.patch build failure

[arekm]

linux-2.6.38/drivers/net/mlx4/main.c: In function ‘mlx4_init_hca’:
linux-2.6.38/drivers/net/mlx4/main.c:740:2: error: implicit declaration of function ‘pax_track_stack’ [-Werror=implicit-function-declaration]

#include <linux/sched.h> is missing