gas: Modifications to js swig file to use appropriate SWIG typemap

Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Sarah Knepper <sarah.knepper@intel.com>

src/gas/jsupm_gas.i

@@ -2,6 +2,12 @@
 %include "../upm.i"
 %include "../carrays_uint16_t.i"
 
+%typemap(in) uint16_t * {
+  void *argp = 0 ;
+  int res = SWIG_ConvertPtr($input, &argp,SWIGTYPE_p_uint16Array, 0 |  0 );
+  $1 = (uint16_t *)(argp);
+}
+
 %include "gas.h"
 %{
     #include "gas.h"