Add a deinit function that will be called and check inside
whether context is initialized. This function is called for
freeing the CC context, instead of every time check that it's
initizliaed and free it.
Initiate the CC context in the starts function and in the reset.
In the reset function, free aes context before.
Free the context in the finish function and reset function.
Fix minor style fixes and typos:
1. Change file name to correct one.
2. Change copyright year.
3. Insert whitespaces before and after paranthesis.
4. Put `*` next to pointer name.
Add support for CC310 CMAC driver returning
`MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for key size other than 128 bits,
and for crypto algorithms other than AES( e.g. DES).
Ron Eldor