LSM Audit: rename LSM_AUDIT_NO_AUDIT to LSM_AUDIT_DATA_NONE

Most of the LSM common audit work uses LSM_AUDIT_DATA_* for the naming.
This was not so for LSM_AUDIT_NO_AUDIT which means the generic initializer
cannot be used.  This patch just renames the flag so the generic
initializer can be used.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index acba3df..8c36506 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -220,7 +220,7 @@
 	}
 
 	switch (a->type) {
-	case LSM_AUDIT_NO_AUDIT:
+	case LSM_AUDIT_DATA_NONE:
 		return;
 	case LSM_AUDIT_DATA_IPC:
 		audit_log_format(ab, " key=%d ", a->u.ipc_id);