Add Debian packaging information
diff --git a/debian/libgtpnl-dev.install b/debian/libgtpnl-dev.install
new file mode 100644
index 0000000..2f5a97b
--- /dev/null
+++ b/debian/libgtpnl-dev.install
@@ -0,0 +1,4 @@
+usr/include/*
+usr/lib/*/lib*.so
+usr/lib/*/lib*.la
+usr/lib/*/pkgconfig/*