fs/cifs: require sha512

This got lost in commit 0fdfef9,
which removed CONFIG_CIFS_SMB311.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Fixes: 0fdfef9 ("smb3: simplify code by removing CONFIG_CIFS_SMB311")
CC: Stable <stable@vger.kernel.org>
CC: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/Kconfig

@@ -6,6 +6,7 @@ config CIFS
 	select CRYPTO_MD4
 	select CRYPTO_MD5
 	select CRYPTO_SHA256
+	select CRYPTO_SHA512
 	select CRYPTO_CMAC
 	select CRYPTO_HMAC
 	select CRYPTO_ARC4