octeontx2-bphy-netdev: Add cnf10k rfoe debugfs

commit 838f242f6ddf112a3d5a5f4eea7760f5bc369f09 from
git@git.assembla.com:cavium/WindRiver.linux.git

Change-Id: I7b49014aa413cda5ad9a6cc26b3b6c4de7b737b0
Signed-off-by: Baha Mesleh <baha.mesleh@nokia.com>
Signed-off-by: Rakesh Babu Saladi <rsaladi2@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/85360


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>