sync: latest libbpf changes from kernel

Syncing latest libbpf commits from kernel repository.
Baseline bpf-next commit:   376dcfe3a4e5a5475a84e6b5f926066a8614f887
Checkpoint bpf-next commit: 3cb12d27ff655e57e8efe3486dca2a22f4e30578
Baseline bpf commit:        28802e7c0c9954218d1830f7507edc9d49b03a00
Checkpoint bpf commit:      c66dca98a24cb5f3493dd08d40bcfa94a220fa92

Daniel Borkmann (1):
  bpf, libbpf: Guard bpf inline asm from bpf_tail_call_static

Toke Høiland-Jørgensen (1):
  bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop

 include/uapi/linux/bpf.h | 22 ++++++++++++++++++----
 src/bpf_helpers.h        |  2 ++
 2 files changed, 20 insertions(+), 4 deletions(-)

--
2.24.1

CHECKPOINT-COMMIT

@@ -1 +1 @@
-376dcfe3a4e5a5475a84e6b5f926066a8614f887
+3cb12d27ff655e57e8efe3486dca2a22f4e30578