net: ti: icssg-prueth: Add prp offload support to ICSSG driver

Add support for ICSSG PRP mode which supports offloading of:
 - Packet duplication and PRP trailer insertion
 - Packet duplicate discard and PRP trailer removal

Signed-off-by: Himanshu Mittal <h-mittal1@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250618175536.430568-1-h-mittal1@ti.com


Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>