Update to v6.3 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.3

Test: Bionic unit tests pass.
Change-Id: I5270ef291a77343e47ef3a5fbd02b8cacf218ec5
diff --git a/libc/kernel/uapi/linux/netdev.h b/libc/kernel/uapi/linux/netdev.h
new file mode 100644
index 0000000..53a237b
--- /dev/null
+++ b/libc/kernel/uapi/linux/netdev.h
@@ -0,0 +1,49 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_NETDEV_H
+#define _UAPI_LINUX_NETDEV_H
+#define NETDEV_FAMILY_NAME "netdev"
+#define NETDEV_FAMILY_VERSION 1
+enum netdev_xdp_act {
+  NETDEV_XDP_ACT_BASIC = 1,
+  NETDEV_XDP_ACT_REDIRECT = 2,
+  NETDEV_XDP_ACT_NDO_XMIT = 4,
+  NETDEV_XDP_ACT_XSK_ZEROCOPY = 8,
+  NETDEV_XDP_ACT_HW_OFFLOAD = 16,
+  NETDEV_XDP_ACT_RX_SG = 32,
+  NETDEV_XDP_ACT_NDO_XMIT_SG = 64,
+  NETDEV_XDP_ACT_MASK = 127,
+};
+enum {
+  NETDEV_A_DEV_IFINDEX = 1,
+  NETDEV_A_DEV_PAD,
+  NETDEV_A_DEV_XDP_FEATURES,
+  __NETDEV_A_DEV_MAX,
+  NETDEV_A_DEV_MAX = (__NETDEV_A_DEV_MAX - 1)
+};
+enum {
+  NETDEV_CMD_DEV_GET = 1,
+  NETDEV_CMD_DEV_ADD_NTF,
+  NETDEV_CMD_DEV_DEL_NTF,
+  NETDEV_CMD_DEV_CHANGE_NTF,
+  __NETDEV_CMD_MAX,
+  NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1)
+};
+#define NETDEV_MCGRP_MGMT "mgmt"
+#endif