Add manifest file for ONT(prism).

To start prism development:
- cp <workspace>/manifest/prism.xml <workspace>/.repo/manifests/
- use "repo init -m prism.xml" to start the repo.

Change-Id: Ia072a51c6c5bda932b71d9d48eb3d05e5b7ab851
diff --git a/prism.xml b/prism.xml
new file mode 100644
index 0000000..c1154e4
--- /dev/null
+++ b/prism.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<manifest>
+  <remote
+    fetch="https://gfiber-internal.googlesource.com/"
+    name="gfiber-internal"
+    review="https://gfiber-internal-review.googlesource.com/"/>
+  <default remote="gfiber-internal" revision="prism_dev" sync-j="12"/>
+
+  <project name="buildroot"/>
+  <project name="kernel/prism"/>
+  <project name="manifests" path="manifest"/>
+  <project name="toolchains/prism"/>
+  <project name="uboot/prism"/>
+  <project name="vendor/google/catawampus"/>
+  <project name="vendor/google/platform"/>
+  <project name="vendor/marvell/application"/>
+  <project name="vendor/opensource/toolbox" path="toolbox-for-linux"/>
+</manifest>