libbpf: Move few APIs from 0.4 to 0.5 version

mainline inclusion
from mainline-5.14-rc1
commit 16cac006
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5EUVD
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16cac0060680c11bb82c325c4fe95cb66fc8dfaf

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

Official libbpf 0.4 release doesn't include three APIs that were tentatively
put into 0.4 section. Fix libbpf.map and move these three APIs:

  - bpf_map__initial_value;
  - bpf_map_lookup_and_delete_elem_flags;
  - bpf_object__gen_loader.
Signed-off-by: NAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210603004026.2698513-2-andrii@kernel.org
(cherry picked from commit 16cac006)
Signed-off-by: NWang Yufen <wangyufen@huawei.com>

Conflicts:
	tools/lib/bpf/libbpf.map
Signed-off-by: NWang Yufen <wangyufen@huawei.com>

tools/lib/bpf/libbpf.map

@@ -359,9 +359,7 @@ LIBBPF_0.4.0 {
 		bpf_linker__finalize;
 		bpf_linker__free;
 		bpf_linker__new;
-		bpf_map__initial_value;
 		bpf_map__inner_map;
-		bpf_object__gen_loader;
 		bpf_object__set_kversion;
 		bpf_tc_attach;
 		bpf_tc_detach;
@@ -372,5 +370,8 @@ LIBBPF_0.4.0 {
 
 LIBBPF_0.5.0 {
 	global:
+		bpf_map__initial_value;
+		bpf_map_lookup_and_delete_elem_flags;
+		bpf_object__gen_loader;
 		libbpf_set_strict_mode;
 } LIBBPF_0.4.0;