Add support for mips, mipsle (#45)

diff --git a/ztypes_mipsx.go b/ztypes_mipsx.go
new file mode 100644
index 0000000..425afc8
--- /dev/null
+++ b/ztypes_mipsx.go
@@ -0,0 +1,12 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs types.go
+
+// +build linux
+// +build mips mipsle
+
+package pty
+
+type (
+	_C_int  int32
+	_C_uint uint32
+)