disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/bpf.h
..
..
@@ -740,7 +740,7 @@
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 static inline struct bpf_trampoline *bpf_trampoline_get(u64 key,
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 							struct bpf_attach_target_info *tgt_info)
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 {
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-	return ERR_PTR(-EOPNOTSUPP);
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+	return NULL;
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 }
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 static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {}
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 #define DEFINE_BPF_DISPATCHER(name)