Tx flow controlled is disabled in the Ax silicon version due to an errata.
This errata is not applicable for HIGIG Tx flow control, therefore
not enabling in HIGIG case.
Fixes: 602009ee2dfb ("net/octeontx2: support HIGIG2")
Cc: stable@dpdk.org
Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>