Define separate OWNERS file for Input

Bug: None
Test: None
Change-Id: I0ee0f24c51db003b323f76855d3cfd8fddb44c1a
diff --git a/INPUT_OWNERS b/INPUT_OWNERS
new file mode 100644
index 0000000..6041f637f
--- /dev/null
+++ b/INPUT_OWNERS
@@ -0,0 +1,3 @@
+michaelwr@google.com
+prabirmsp@google.com
+svv@google.com