sync to latest libbpf (#2540)

sync to latest libpf with tag v0.0.5.

Signed-off-by: Yonghong Song <yhs@fb.com>
diff --git a/introspection/bps.c b/introspection/bps.c
index fe47a80..5e510aa 100644
--- a/introspection/bps.c
+++ b/introspection/bps.c
@@ -69,6 +69,7 @@
   [BPF_MAP_TYPE_QUEUE] = "queue",
   [BPF_MAP_TYPE_STACK] = "stack",
   [BPF_MAP_TYPE_SK_STORAGE] = "sk_storage",
+  [BPF_MAP_TYPE_DEVMAP_HASH] = "devmap_hash",
 };
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))