Add toolchain for broadcom ARM toolchain.

Change-Id: I27997d68e9da4b514491c69ca0b827eb3a706e0b
diff --git a/default.xml b/default.xml
index 93cfffb..b29328f 100644
--- a/default.xml
+++ b/default.xml
@@ -12,6 +12,7 @@
     url="http://gfiber-buildbot.cbf.corp.google.com:8080/"/>
 
   <project name="toolchains/bruno"/>
+  <project name="toolchains/bruno_arm"/>
   <project name="toolchains/kvm"/>
   <project name="toolchains/mindspeed"/>
   <project name="toolchains/prism"/>