ip link: hsr: Add support for passing information about INTERLINK device

The HSR capable device can operate in two modes of operations -
Doubly Attached Node for HSR (DANH) and RedBOX (HSR-SAN).

The latter one allows connection of non-HSR aware device(s) to HSR
network.
This node is called SAN (Singly Attached Network) and is connected via
INTERLINK network device.

This patch adds support for passing information about the INTERLINK
device, so the Linux driver can properly setup it.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: David Ahern <dsahern@kernel.org>
3 files changed