smb3: rename encryption/decryption TFMs

Detach the TFM name from a specific algorithm (AES-CCM) as
AES-GCM is also supported, making the name misleading.

s/ccmaesencrypt/enc/
s/ccmaesdecrypt/dec/

Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>