nvmet-tcp: select CONFIG_TLS from CONFIG_NVME_TARGET_TCP_TLS

Ensure that TLS support is enabled in the kernel when
CONFIG_NVME_TARGET_TCP_TLS is enabled. Without this the code compiles,
but does not actually work unless something else enables CONFIG_TLS.

Fixes: 675b453 ("nvmet-tcp: enable TLS handshake upcall")
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

Author: alistair23

drivers/nvme/target/Kconfig

@@ -98,6 +98,7 @@ config NVME_TARGET_TCP_TLS
 	bool "NVMe over Fabrics TCP target TLS encryption support"
 	depends on NVME_TARGET_TCP
 	select NET_HANDSHAKE
+	select TLS
 	help
 	  Enables TLS encryption for the NVMe TCP target using the netlink handshake API.