Add hello_world repo

Signed-off-by: Victor Chong <victor.chong@linaro.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Reviewed-by: David Brown <david.brown@linaro.org>
diff --git a/fvp.xml b/fvp.xml
index e62d005..ee6647c 100644
--- a/fvp.xml
+++ b/fvp.xml
@@ -27,6 +27,9 @@
 	<!-- Linux kernel -->
 	<project remote="linaro-swg" path="linux" name="linux.git" revision="optee"/>
 
+	<!-- Hello world TA -->
+	<project remote="linaro-swg" path="hello_world" name="hello_world.git" />
+
 	<!-- Filesystem -->
 	<project remote="linaro-swg" path="gen_rootfs" name="gen_rootfs.git" />