net: sonic: replace dev_kfree_skb in sonic_send_packet

sonic_send_packet will be processed in irq or non-irq
context, so it would better use dev_kfree_skb_any
instead of dev_kfree_skb.

Fixes: d9fb9f38 ("*sonic/natsemi/ns83829: Move the National Semi-conductor drivers")
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>