Update to v4.19 kernel headers.

Test: Builds and boots.
Change-Id: I99a9ed79666e143b47f02ca4e59eed94f69b7e4a
(cherry picked from commit a981e2e52e2e95a65fa9c9b6fb16dcb4c83dd576)
diff --git a/libc/kernel/uapi/linux/if_link.h b/libc/kernel/uapi/linux/if_link.h
index 8a9993b..4bbf21d 100644
--- a/libc/kernel/uapi/linux/if_link.h
+++ b/libc/kernel/uapi/linux/if_link.h
@@ -141,6 +141,8 @@
   IFLA_CARRIER_UP_COUNT,
   IFLA_CARRIER_DOWN_COUNT,
   IFLA_NEW_IFINDEX,
+  IFLA_MIN_MTU,
+  IFLA_MAX_MTU,
   __IFLA_MAX
 };
 #define IFLA_MAX (__IFLA_MAX - 1)
@@ -262,6 +264,8 @@
   IFLA_BRPORT_BCAST_FLOOD,
   IFLA_BRPORT_GROUP_FWD_MASK,
   IFLA_BRPORT_NEIGH_SUPPRESS,
+  IFLA_BRPORT_ISOLATED,
+  IFLA_BRPORT_BACKUP_PORT,
   __IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
@@ -361,6 +365,13 @@
   __IFLA_MACSEC_MAX,
 };
 #define IFLA_MACSEC_MAX (__IFLA_MACSEC_MAX - 1)
+enum {
+  IFLA_XFRM_UNSPEC,
+  IFLA_XFRM_LINK,
+  IFLA_XFRM_IF_ID,
+  __IFLA_XFRM_MAX
+};
+#define IFLA_XFRM_MAX (__IFLA_XFRM_MAX - 1)
 enum macsec_validation_type {
   MACSEC_VALIDATE_DISABLED = 0,
   MACSEC_VALIDATE_CHECK = 1,
@@ -412,6 +423,7 @@
   IFLA_VXLAN_COLLECT_METADATA,
   IFLA_VXLAN_LABEL,
   IFLA_VXLAN_GPE,
+  IFLA_VXLAN_TTL_INHERIT,
   __IFLA_VXLAN_MAX
 };
 #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)
@@ -714,6 +726,7 @@
   XDP_ATTACHED_DRV,
   XDP_ATTACHED_SKB,
   XDP_ATTACHED_HW,
+  XDP_ATTACHED_MULTI,
 };
 enum {
   IFLA_XDP_UNSPEC,
@@ -721,6 +734,9 @@
   IFLA_XDP_ATTACHED,
   IFLA_XDP_FLAGS,
   IFLA_XDP_PROG_ID,
+  IFLA_XDP_DRV_PROG_ID,
+  IFLA_XDP_SKB_PROG_ID,
+  IFLA_XDP_HW_PROG_ID,
   __IFLA_XDP_MAX,
 };
 #define IFLA_XDP_MAX (__IFLA_XDP_MAX - 1)