Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/ceph/crypto.h b/net/ceph/crypto.h
index bb45c7d..96ef4d8 100644
--- a/net/ceph/crypto.h
+++ b/net/ceph/crypto.h
@@ -13,7 +13,7 @@
 	struct ceph_timespec created;
 	int len;
 	void *key;
-	struct crypto_skcipher *tfm;
+	struct crypto_sync_skcipher *tfm;
 };
 
 int ceph_crypto_key_clone(struct ceph_crypto_key *dst,