sync: latest libbpf changes from kernel

Syncing latest libbpf commits from kernel repository.
Baseline bpf-next commit:   42be23e8f2dcb100cb9944b2b54b6bf41aff943d
Checkpoint bpf-next commit: 561c80369df0733ba0574882a1635287b20f9de2
Baseline bpf commit:        0238c45fbbf8228f52aa4642f0cdc21c570d1dfe
Checkpoint bpf commit:      561c80369df0733ba0574882a1635287b20f9de2

Achill Gilgenast (1):
  libbpf: Avoid possible use of uninitialized mod_len

Ilya Leoshkevich (1):
  libbpf: Add the ability to suppress perf event enablement

Jason Xing (1):
  net: xsk: introduce XDP_MAX_TX_SKB_BUDGET setsockopt

Samiullah Khawaja (2):
  Add support to set NAPI threaded for individual NAPI
  net: define an enum for the napi threaded state

 include/uapi/linux/if_xdp.h |  1 +
 include/uapi/linux/netdev.h |  6 ++++++
 src/libbpf.c                | 15 +++++++++------
 src/libbpf.h                |  4 +++-
 4 files changed, 19 insertions(+), 7 deletions(-)

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>

BPF-CHECKPOINT-COMMIT

@@ -1 +1 @@
-0238c45fbbf8228f52aa4642f0cdc21c570d1dfe
+561c80369df0733ba0574882a1635287b20f9de2

CHECKPOINT-COMMIT

@@ -1 +1 @@
-42be23e8f2dcb100cb9944b2b54b6bf41aff943d
+561c80369df0733ba0574882a1635287b20f9de2