net: socket: accept redundant network info in control message

Redundant network info in control message of a submitted packet
is consumed by the HSR/PRP layer to avoid duplication. Such
packet will be sent out through the port indicated by the redundant
network info.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>