Update to v5.5 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.5

Test: Boots on walleye.
Test: Ran bionic-unit-tests on walleye.
Test: Boots on cuttlefish.
Test: Ran bionic-unit-tests on cuttlefish.
Change-Id: I57387d3c31e0ba5ad125ffe291cecf365c7b374e
Merged-In: I57387d3c31e0ba5ad125ffe291cecf365c7b374e
diff --git a/libc/kernel/uapi/linux/devlink.h b/libc/kernel/uapi/linux/devlink.h
index beab9fd..b08fa8a 100644
--- a/libc/kernel/uapi/linux/devlink.h
+++ b/libc/kernel/uapi/linux/devlink.h
@@ -307,6 +307,9 @@
   DEVLINK_ATTR_TRAP_GROUP_NAME,
   DEVLINK_ATTR_RELOAD_FAILED,
   DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
+  DEVLINK_ATTR_NETNS_FD,
+  DEVLINK_ATTR_NETNS_PID,
+  DEVLINK_ATTR_NETNS_ID,
   __DEVLINK_ATTR_MAX,
   DEVLINK_ATTR_MAX = __DEVLINK_ATTR_MAX - 1
 };