ksmbd: select CRYPTO_AES

ksmbd allocates "gcm(aes)" and "ccm(aes)" AEAD transforms for SMB3
encryption, but SMB_SERVER only selects CRYPTO_GCM and CRYPTO_CCM, not
an AES cipher. With a configuration in which nothing else enables
CRYPTO_AES, ksmbd builds but cannot allocate the transforms, and every
session that uses encryption fails:

  ksmbd: Failed to alloc encrypt aead : -2
  ksmbd: crypto alloc failed

Select CRYPTO_AES, as the SMB client already does.

Fixes: a848c4f15a ("cifsd: add Kconfig and Makefile")
Assisted-by: LLM
Signed-off-by: Michail Andreas Michalopoulos <mike.michalo@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

fs/smb/server/Kconfig

@@ -16,6 +16,7 @@ config SMB_SERVER
 	select CRYPTO_AEAD2
 	select CRYPTO_CCM
 	select CRYPTO_GCM
+	select CRYPTO_AES
 	select ASN1
 	select OID_REGISTRY
 	select CRC32