audit: include security.h unconditionally

The ifdef-else logic is already in the header file, so include it
unconditionally, no functional changes here.
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
[PM: fixed misspelling in the subject]
Signed-off-by: Paul Moore <paul@paul-moore.com>

kernel/audit.c

@@ -53,9 +53,7 @@
 #include <net/sock.h>
 #include <net/netlink.h>
 #include <linux/skbuff.h>
-#ifdef CONFIG_SECURITY
 #include <linux/security.h>
-#endif
 #include <linux/freezer.h>
 #include <linux/pid_namespace.h>
 #include <net/netns/generic.h>