Create phosphor-gpio-util framework

This application can write GPIOs.  Read support may
be added in the future.

Aside from just setting a GPIO low or high, it can
also do: 0 -> <delay> -> 1 or 1 -> <delay> -> 0.
All functionality will be added in future commits

Change-Id: I2d3c761eb909ddce3952bfb3173ce271f03544ba
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/gpio-util/Makefile.am b/gpio-util/Makefile.am
new file mode 100644
index 0000000..ea8c763
--- /dev/null
+++ b/gpio-util/Makefile.am
@@ -0,0 +1,8 @@
+AM_DEFAULT_SOURCE_EXT = .cpp
+AM_CPPFLAGS = -iquote ${top_srcdir}
+
+sbin_PROGRAMS = \
+	phosphor-gpio-util
+
+phosphor_gpio_util_SOURCES = \
+	main.cpp