BPF_SCHED and BPF_PROG_TYPE_SCHED breaks the KABI of enum
bpf_prog_type and bpf_attach_type.

This patch uses KABI_EXTEND_ENUM and KABI_BROKEN_INSERT_ENUM
to fix it.
Signed-off-by: NJialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: NHui Tang <tanghui20@huawei.com>