UPSTREAM: net: socionext: netsec: fix xdp stats accounting

Increment netdev rx counters even for XDP_DROP verdict. Report even
tx bytes for xdp buffers (TYPE_NETSEC_XDP_TX or TYPE_NETSEC_XDP_NDO).
Moreover account pending buffer length in netsec_xdp_queue_one as it is
done for skb counterpart

Bug: 254441685
Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
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>
[Lee: Back-ported to solve a dependency]
(cherry picked from commit 0c5378f9d5003334775ea0e5e9934976aa4a1b66)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: Ia512f11529436aca74c23e70eb4edb8ee54e3fa3