commit 0c5c9fb55106 (net: Introduce possible_net_t) changed
use of write_pnet and read_pnet. This patch will map possible_net_t
back to struct net * to use old api.
Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>