gpio: gpio in/out both work

* Python example included.

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>

examples/python/blink-io8.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+
+import pymaa as maa
+import time
+
+x = maa.gpio_t()
+maa.gpio_init(x, 26)
+maa.gpio_dir(x, "out")
+
+while True:
+    maa.gpio_write(x,1)
+    time.sleep(0.2)
+    maa.gpio_write(x,0)
+    time.sleep(0.2)