Update to v5.6 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.6

Add a new method for removing structures. This is to deal with the kernel
headers changing some definitions of timeval to __kernel_old_timeval
and itimerval to __kernel_old_itimerval. Remove the __kernel_old_XX
strutures and change the other structures to the previous definitions.

This only works so long as these structures stay the same, if they
diverge, then a different strategy will need to be implemented.

Test: Booted cuttlefish/walleye.
Test: Ran bionic-unit-tests on cuttlefish/walleye.
Change-Id: I0a61f4fa6e4155c602e0414d9b38c2e1637829af
diff --git a/libc/kernel/uapi/linux/rtnetlink.h b/libc/kernel/uapi/linux/rtnetlink.h
index 14366de..295fbed 100644
--- a/libc/kernel/uapi/linux/rtnetlink.h
+++ b/libc/kernel/uapi/linux/rtnetlink.h
@@ -151,6 +151,12 @@
 #define RTM_DELLINKPROP RTM_DELLINKPROP
   RTM_GETLINKPROP,
 #define RTM_GETLINKPROP RTM_GETLINKPROP
+  RTM_NEWVLAN = 112,
+#define RTM_NEWNVLAN RTM_NEWVLAN
+  RTM_DELVLAN,
+#define RTM_DELVLAN RTM_DELVLAN
+  RTM_GETVLAN,
+#define RTM_GETVLAN RTM_GETVLAN
   __RTM_MAX,
 #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
 };
@@ -230,6 +236,8 @@
 #define RTM_F_PREFIX 0x800
 #define RTM_F_LOOKUP_TABLE 0x1000
 #define RTM_F_FIB_MATCH 0x2000
+#define RTM_F_OFFLOAD 0x4000
+#define RTM_F_TRAP 0x8000
 enum rt_class_t {
   RT_TABLE_UNSPEC = 0,
   RT_TABLE_COMPAT = 252,
@@ -537,6 +545,8 @@
 #define RTNLGRP_IPV6_MROUTE_R RTNLGRP_IPV6_MROUTE_R
   RTNLGRP_NEXTHOP,
 #define RTNLGRP_NEXTHOP RTNLGRP_NEXTHOP
+  RTNLGRP_BRVLAN,
+#define RTNLGRP_BRVLAN RTNLGRP_BRVLAN
   __RTNLGRP_MAX
 };
 #define RTNLGRP_MAX (__RTNLGRP_MAX - 1)