[PATCH 1/2] cryptodev: update raw datapath API documentation

[Akhil Goyal]

> Subject: [PATCH 1/2] cryptodev: update raw datapath API documentation
> 
> Clarify the error codes returned by rte_cryptodev_raw_dp_ctx. Cryptodev
> can return -ENOTSUP to indicate any unsupported features with raw APIs.
> 
> Remove redundant references about 'rte_cryptodev_raw_attach_session()'.
> The API is not part of the specification.
> 
> Signed-off-by: Anoob Joseph <anoobj at marvell.com>
> Signed-off-by: Vidya Sagar Velumuri <vvelumuri at marvell.com>
Acked-by: Akhil Goyal <gakhil at marvell.com>