doc: add flow API to qede NIC features
doc: add flow API to qede NIC features

Commit 267d32de46a8 ("net/qede: support generic flow API")
added a support for RTE_FLOW APIs but did not update the feature
support matrix.

Fixes: 267d32de46a8 ("net/qede: support generic flow API")
Cc: stable@dpdk.org

Signed-off-by: Shahed Shaikh <bb2e48e0d2e83bc1e66bc4b537486737b56bbefc@marvell.com>

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