Along the same idea as passing a packet's tx timestamp
back to user space application through a socket's errqueue,
this patch adds the passing of a packet's tx redundant network
information back to user space application through a
socket's errqueue. The redundant network information could
include information from HSR TAG or PRP RCT, or the
redundant network port on which the packet is sent.

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>