audit: reduce scope of audit_log_fcaps

audit_log_fcaps() isn't used outside kernel/audit.c.  Reduce its scope.

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
diff --git a/kernel/audit.c b/kernel/audit.c
index 9a951e6..de99195 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1681,7 +1681,7 @@
 	}
 }
 
-void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name)
+static void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name)
 {
 	kernel_cap_t *perm = &name->fcap.permitted;
 	kernel_cap_t *inh = &name->fcap.inheritable;