cryptocell: move Cryptocell specific API into driver

Code using Cryptocell specific APIs was used as part of the
arm common board ROT support, instead of being abstracted
in Cryptocell specific driver code, creating two problems:
- Any none arm board that uses Cryptocell wuld need to
  copy and paste the same code.
- Inability to cleanly support multiple versions of Cryptocell
  API and products.

Move over Cryptocell specific API calls into the Cryptocell
driver, creating abstraction API where needed.

Signed-off-by: Gilad Ben-Yossef <gilad.benyossef@arm.com>
Change-Id: I9e03ddce90fcc47cfdc747098bece86dbd11c58e
diff --git a/drivers/auth/cryptocell/cryptocell_crypto.c b/drivers/auth/cryptocell/cryptocell_crypto.c
index a507d0a..6bf27a9 100644
--- a/drivers/auth/cryptocell/cryptocell_crypto.c
+++ b/drivers/auth/cryptocell/cryptocell_crypto.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -303,4 +303,3 @@
  */
 REGISTER_CRYPTO_LIB(LIB_NAME, init, verify_signature, verify_hash);
 
-