octeontx2-pf: TC flower offload support for mirror

commit 61e75ee0f133f01e17e502c82c4fcdbeb5cc691a from
git@git.assembla.com:cavium/WindRiver.linux.git

This patch extends TC flower offload support for mirroring ingress/egress
traffic to a different PF/VF.

Signed-off-by: Suman Ghosh <sumang@marvell.com>
Change-Id: I4aa5aa9ae54edd80abad4cdbe8371d3c66fdffa6
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/114751


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>