update bazel BUILD

pkg/proxy/ipvs/BUILD

@@ -75,6 +75,7 @@ go_library(
     ] + select({
         "@io_bazel_rules_go//go/platform:linux_amd64": [
             "//vendor/github.com/vishvananda/netlink:go_default_library",
+            "//vendor/golang.org/x/sys/unix:go_default_library",
         ],
         "//conditions:default": [],
     }),