n architecture for arm

src/freedombone-utils-nodejs

     NPM_ARCH='ia32'
     if [[ $ARCHITECTURE == 'arm'* ]]; then
         NPM_ARCH='armv7l'
-        N_ARCH='arm'
+        N_ARCH='armv7l'
     fi
     if [[ $ARCHITECTURE == *"aarch"* ]]; then
         NPM_ARCH='arm64'