net: fix kabi breakage in struct packet_type

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IA72F3


CVE: CVE-2022-48757

--------------------------------

Fix kabi breakage in struct packet_type

Fixes: b67ad6170c0e ("net: fix information leakage in /proc/net/ptype")
Signed-off-by: Dong Chenchen <dongchenchen2@huawei.com>