usertools/devbind: update octeontx2 DMA device
usertools/devbind: update octeontx2 DMA device

The octeontx2_dma rawdev driver is removed in DPDK-21.11. The new driver
for the same device uses the dmadev. So this patch updates the device
naming and lists it under dma devices section.

Signed-off-by: Radha Mohan Chintakuntla <4fe9466f2319f8c0a1d2764319802078e8dc052e@marvell.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk