chassiskill: Add chassiskill tool

This tool is meant to circumvent the d-bus method of
powering down the chassis and directly pull the power
from it. Meant for use by the 'obmcutil' tool.

Turns off the 'power_up_outs' GPIOs

Change-Id: If8e51acbb3b192097fa9efa504d6cfa48d2bee9d
Signed-off-by: Anthony Wilson <wilsonan@us.ibm.com>
diff --git a/utility.hpp b/utility.hpp
new file mode 100644
index 0000000..4990a1c
--- /dev/null
+++ b/utility.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <string>
+
+namespace utility
+{
+
+/** @brief Set the value of a specified gpio
+ *
+ *  @param[in] gpioName - GPIO to set
+ *  @param[in] activeLow - is pin active at low voltage
+ *  @param[in] asserted - is pin in active state
+ *
+ *  @return bool - success of setting the GPIO
+ */
+bool gpioSetValue(const std::string& gpioName, bool activeLow, bool asserted)
+{
+    /* TODO */
+    return true;
+}
+
+} // namespace utility