Added structures and enums specific to compression, including the compression operation structure and the different supported algorithms, checksums and compression levels. Signed-off-by: Fiona Trahe <fiona.trahe@intel.com> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com> Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com> Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>