Fixed linker order for Arduino libraries for Due and WiFi combination

Fixed linker order for Arduino libraries for Due and WiFi combination

Incorrect order of WiFi and SPI libraries was causing linker
to generate output binary which Arduino Due MCU was unable to load.

Change-Id: I3e5aa19d531ed8d754dad7d4fd53848a6a4d1f68
Signed-off-by: Sachin Agrawal <sachin.agrawal@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/673
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sanjay Sharma <sanjay1.sharma@intel.com>
Reviewed-by: Joseph Morrow <joseph.l.morrow@intel.com>
Reviewed-by: Erich Keane <erich.keane@intel.com>