arm: added the description of the syscall vmsplice

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

arch/arm/syscall.def

@@ -71,6 +71,7 @@ restart_syscall			219	0	(void)
 exit_group			231	248	(int error_code)
 set_robust_list			273	338	(struct robust_list_head *head, size_t len)
 get_robust_list			274	339	(int pid, struct robust_list_head **head_ptr, size_t *len_ptr)
+vmsplice			278	343	(int fd, const struct iovec *iov, unsigned long nr_segs, unsigned int flags)
 fanotify_init			300	367	(unsigned int flags, unsigned int event_f_flags)
 fanotify_mark			301	368	(int fanotify_fd, unsigned int flags, u64 mask, int dfd, const char *pathname)
 open_by_handle_at		304	371	(int mountdirfd, struct file_handle *handle, int flags)