Return `MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE` only for valid key lengths,
that are not supported by Cryptocell 310. For other key sizes, return
`MBEDTLS_ERR_CCM_BAD_INPUT`
1. Change camelcase variables to Mbed OS style.
2. Remove functions declarations from the `_alt` header, since they
are now added from the module header regardless whether an alternative
implementation exists.
3. Remove the `extern "c"` declaration from the `_alt` headers.
4. Remove whitespaces before opening parenthesis.
5. Fix alignment of function parameters.
6. Fix indentations.
7. Limit lines to 80 characters.
An additional fix for ccm_alt, when the message length is too big.
Check for specific error returned from CC310, and return
`MBEDTLS_ERR_CCM_BAD_INPUT`.
Have the HW accelearation drivers return the platform module
errors about feature unsupported, and hw acceleration failure,
because the moduel specific errors will be removed.
Ron Eldor