octeontx2-af: Add support to get REE status for REP

commit 60bc8ec4e3b934884b70556a151d2539efdd3d46 from
git@git.assembla.com:cavium/WindRiver.linux.git

This patch adds support get Representee packet stats
when requested by the representor.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Change-Id: I03a0a2356b573baf343488e0a92c4c75b09add44
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/120596
Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Harman Kalra <hkalra@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>