update submodule version 3.16.4

Signed-off-by: Steve Jeong <steve@how2flow.net>
diff --git a/WiringPi b/WiringPi
index 3d6aa1a..58cea61 160000
--- a/WiringPi
+++ b/WiringPi
@@ -1 +1 @@
-Subproject commit 3d6aa1a407362ab0a0a681a35053e812869cd9e4
+Subproject commit 58cea616e0a450fbcb8c148824f67609cce37b3d
diff --git a/setup.py b/setup.py
index 84387f4..f151ce7 100644
--- a/setup.py
+++ b/setup.py
@@ -64,7 +64,7 @@
 
 setup(
     name = 'odroid_wiringpi',
-    version = '3.16.2',
+    version = '3.16.4',
     ext_modules = [ _odroid_wiringpi ],
     py_modules = ["odroid_wiringpi"],
     install_requires=[],