crypto/octeontx2: add kmod dependency info

crypto/octeontx2: add kmod dependency info

Like for OCTEON TX, the OCTEON TX2 crypto engines must
first be unbound from their kernel module, then rebound to
vfio-pci, before being used in DPDK.

As this capability is detected at runtime by dpdk-pmdinfo,
add the info in the PMD registering directives.

Then an external script can be used for bind and unbind.

Fixes: 2f8a1b963eb77 ("crypto/octeontx2: add PMD skeleton")
Cc: stable@dpdk.org
Signed-off-by: Thierry Herbelot <thierry.herbelot@6wind.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>