net: netsec: enable pp skb recycling

Similar to mvneta or mvpp2, enable page_pool skb recycling for netsec
dirver.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>