octeontx2-af: Add REP and REE link state change support

commit fa8178129d7cbafa4e83081939deaad844b82fc4 from
git@git.assembla.com:cavium/WindRiver.linux.git

This patch add support to notify the REP interface
state to REE and REE state to REP.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Change-Id: Id8871a2b4ce4cb80180a007becc5d03c37328bfb
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/120597
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Tested-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>