Add the directory for the 7250 kernel.

To get rolling putting the kernel for the Brcm arm chip into it's own
branch and directory.

Change-Id: I499b1872b74a9aa058ddbc970915871ff6528f30
diff --git a/default.xml b/default.xml
index b29328f..c95bdcd 100644
--- a/default.xml
+++ b/default.xml
@@ -19,6 +19,7 @@
   <project name="toolchains/windcharger"/>
   <project name="kernel/bruno"/>
   <project name="kernel/bruno" path="kernel/bruno_new" revision="refs/heads/newkernel_dev"/>
+  <project name="kernel/bruno" path="kernel/bruno_arm" revision="refs/heads/broadcom_drops_arm"/>
   <project name="kernel/mindspeed"/>
   <project name="kernel/prism"/>
   <project name="kernel/windcharger"/>