OpenSSL crypto provider: implement TEE_ALG_AES_CMAC

Tested with xtest 4002.
Add OpenSSL copyright notice to tee_ossl_provider.c

This file contains several functions that are adapted from OpenSSL:
- the MD5/SHA HMAC functions: hmac_init(), hmac_udate() and hmac_final() are
similar to OpenSSL's HMAC_Init(), HMAC_Update() and HMAC_Final().
- the AES/DES/DES3 CBC-MAC functions: cbc_mac_init(), cbc_mac_update() and
cbc_mac_final() are inspired from OpenSSL's CMAC_Init(), CMAC_Update() and
CMAC_Final().