update gobgp pkg

vendor/github.com/dgryski/go-farm/fp_generic.go

@@ -0,0 +1,13 @@
+// +build !amd64 purego
+
+package farm
+
+// Fingerprint64 is a 64-bit fingerprint function for byte-slices
+func Fingerprint64(s []byte) uint64 {
+	return naHash64(s)
+}
+
+// Fingerprint32 is a 32-bit fingerprint function for byte-slices
+func Fingerprint32(s []byte) uint32 {
+	return Hash32(s)
+}