Make setResponseFunctions() and setCallback() oneway.

Test: Basic telephony sanity
Bug: 32020264
Change-Id: I05351b5c4d61c19eb08841704bf50ae7de5f683f
diff --git a/radio/1.0/ISap.hal b/radio/1.0/ISap.hal
index 0351130..a11ca93 100644
--- a/radio/1.0/ISap.hal
+++ b/radio/1.0/ISap.hal
@@ -24,7 +24,7 @@
      *
      * @param sapCallback Object containing response and unosolicited indication callbacks
      */
-    setCallback(ISapCallback sapCallback);
+    oneway setCallback(ISapCallback sapCallback);
 
     /**
      * CONNECT_REQ from SAP 1.1 spec 5.1.1