[EXT] [PATCH v2 1/1] doc: update to include bbdev snippet using literalinclude

[Akhil Goyal]

> Adding code snippet using literalinclude so that to keep
> automatically these structures in doc in sync with the
> bbdev source code.
> 
> Signed-off-by: Nicolas Chautru <nicolas.chautru at intel.com>
Applied to dpdk-next-crypto

Thanks.