!300 bpf: Fix build error: linux/kabi.h: No such file or directory

Merge Pull Request from: @barry19901226 
 
 The build error as follows:

 In file included from net/bpfilter/main.c:9:
 net/bpfilter/../../include/uapi/linux/bpf.h:13:10: fatal error: linux/kabi.h: No such file or directory
    13 | #include <linux/kabi.h>
       |          ^~~~~~~~~~~~~~

 kabi.h can not be find in user mode code, so remove
 <include/kabi.h> from include/uapi/linux/bpf.h. And
 use __GENKSYMS__ to fix kabi break. 
 
Link:https://gitee.com/openeuler/kernel/pulls/300 
Reviewed-by: Zucheng Zheng <zhengzucheng@huawei.com> 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com> 
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> 

include/uapi/linux/bpf.h

@@ -10,7 +10,6 @@
 
 #include <linux/types.h>
 #include <linux/bpf_common.h>
-#include <linux/kabi.h>
 
 /* Extended instruction set based on top of classic BPF */
 
@@ -200,7 +199,9 @@ enum bpf_prog_type {
 	BPF_PROG_TYPE_EXT,
 	BPF_PROG_TYPE_LSM,
 	BPF_PROG_TYPE_SK_LOOKUP,
-	KABI_EXTEND_ENUM(BPF_PROG_TYPE_SCHED)
+#ifndef __GENKSYMS__
+	BPF_PROG_TYPE_SCHED,
+#endif
 };
 
 enum bpf_attach_type {
@@ -242,7 +243,9 @@ enum bpf_attach_type {
 	BPF_XDP_CPUMAP,
 	BPF_SK_LOOKUP,
 	BPF_XDP,
-	KABI_BROKEN_INSERT_ENUM(BPF_SCHED)
+#ifndef __GENKSYMS__
+	BPF_SCHED,
+#endif
 	__MAX_BPF_ATTACH_TYPE
 };