avr: added device n31.

avr/devices/n31/boot/0BUILD

@@ -0,0 +1,32 @@
+<?xml?>
+
+<gwbuild>
+
+  <target type="AvrHexFile" name="n31_boot" >
+
+    <includes type="avrasm" >
+      -I $(builddir)
+      -I $(srcdir)
+      -I $(topsrcdir)/avr
+      -I $(topbuilddir)/avr
+    </includes>
+
+
+    <sources type="avrasm" >
+      boot.asm
+    </sources>
+
+
+  </target>
+
+
+  <subdirs>
+  </subdirs>
+
+  <extradist>
+  </extradist>
+  
+
+</gwbuild>
+
+