Move all functions handling virtual devices to a separate
header file "rte_cryptodev_vdev.h", in order to leave only
generic functions for any device in the rest of the files.
It also creates the file "rte_cryptodev_pmd.c", with the
implementations of these functions.
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Declan Doherty <declan.doherty@intel.com>
