Add gitreview config

Change-Id: I35b3aaa3f8af4127d8a1b00c77ab02ae6a182714
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..e218434
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,3 @@
+[gerrit]
+host=gerrit.osmocom.org
+project=osmo-pcap