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/if_bridge.h b/libc/kernel/uapi/linux/if_bridge.h
index 702363e..48f6345 100644
--- a/libc/kernel/uapi/linux/if_bridge.h
+++ b/libc/kernel/uapi/linux/if_bridge.h
@@ -435,6 +435,8 @@
   BRIDGE_VLANDB_ENTRY_TUNNEL_INFO,
   BRIDGE_VLANDB_ENTRY_STATS,
   BRIDGE_VLANDB_ENTRY_MCAST_ROUTER,
+  BRIDGE_VLANDB_ENTRY_MCAST_N_GROUPS,
+  BRIDGE_VLANDB_ENTRY_MCAST_MAX_GROUPS,
   __BRIDGE_VLANDB_ENTRY_MAX,
 };
 #define BRIDGE_VLANDB_ENTRY_MAX (__BRIDGE_VLANDB_ENTRY_MAX - 1)