octeontx2-bphy-netdev: fix link carrier state update for cnf10k

commit 6d518aa5083d4907c985428c03e3b829d7daec7b from
git@git.assembla.com:cavium/WindRiver.linux.git

This patch adds missing code for link carrier state update for
cnf10k.

Signed-off-by: Baha Mesleh <baha.mesleh@nokia.com>
Change-Id: I652f5406c95a3cf35f933b7852b1e1f9f58559a4
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/91556


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>