In packet offload mode, the hardware is responsible to manage
replay window and advance ESN. In that mode, there won't any
call to .xdo_dev_state_advance_esn callback.

So relax current check for existence of that callback.

Link: https://lore.kernel.org/r/9f3dfc3fef2cfcd191f0c5eee7cf0aa74e7f7786.1680162300.git.leonro@nvidia.comReviewed-by: Raed Salem <raeds@nvidia.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>