ppd42ns: Initial implementation of the Grove dust sensor

jrvandr: removed unnecessary mraa_init()

Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com>

src/ppd42ns/pyupm_ppd42ns.i

@@ -0,0 +1,9 @@
+%module pyupm_ppd42ns
+%include "../upm.i"
+
+%feature("autodoc", "3");
+
+%include "ppd42ns.h"
+%{
+    #include "ppd42ns.h"
+%}