Add a Makefile which do nothing

Bug: 140610582
Change-Id: I2b491c3020dbce67ccf288a2261d0ccc4ff70959
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..c6db166
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+.SILENT:
+all: