disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/net/bpf/Makefile
..
..
@@ -1 +1,2 @@
1
-obj-y	:= test_run.o
1
+# SPDX-License-Identifier: GPL-2.0-only
2
+obj-$(CONFIG_BPF_SYSCALL)	:= test_run.o