linux-phytec-ti

crypto: sa2ul: Add crypto driver

The Security Accelerator (SA2_UL) subsystem provides hardware
cryptographic acceleration for the following use cases:
• Encryption and authentication for secure boot
• Encryption and authentication of content in applications
  requiring DRM (digital rights management) and
  content/asset protection
The device includes one instantiation of SA2_UL named SA2_UL0

SA2_UL supports the following cryptographic industry standards to enable data authentication, data
integrity and data confidentiality.

Crypto function library for software acceleration
o AES operation
o 3DES operation
o SHA1 operation
o MD5 operation
o SHA2 – 224, 256, 384, 512 operation

Authentication supported via following hardware cores
o SHA1
o MD5
o SHA2 -224
o SHA2-256
o SHA2-384
o SHA2-512

Patch adds a basic crypto driver and currently supports AES
in cbc mode for both encryption and decryption.

Signed-off-by: Keerthy <j-keerthy@ti.com>