apparmor: mark new functions static

Two new functions were introduced as global functions when they are
only called from inside the file that defines them and should have
been static:

security/apparmor/lsm.c:658:5: error: no previous prototype for 'apparmor_uring_override_creds' [-Werror=missing-prototypes]
security/apparmor/lsm.c:682:5: error: no previous prototype for 'apparmor_uring_sqpoll' [-Werror=missing-prototypes]

Fixes: c4371d90 ("apparmor: add io_uring mediation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>

security/apparmor/lsm.c

@@ -655,7 +655,7 @@ static int profile_uring(struct aa_profile *profile, u32 request,
  * Check to see if the current task is allowed to override it's credentials
  * to service an io_uring operation.
  */
-int apparmor_uring_override_creds(const struct cred *new)
+static int apparmor_uring_override_creds(const struct cred *new)
 {
 	struct aa_profile *profile;
 	struct aa_label *label;
@@ -679,7 +679,7 @@ int apparmor_uring_override_creds(const struct cred *new)
  * Check to see if the current task is allowed to create a new io_uring
  * kernel polling thread.
  */
-int apparmor_uring_sqpoll(void)
+static int apparmor_uring_sqpoll(void)
 {
 	struct aa_profile *profile;
 	struct aa_label *label;