Change HIDL fmq tests to use int32_t for payload

This is in preperation for more AIDL fmq testing. The types need to be
the same and AIDL does not support unit16_t.

Test: atest fmq_test fmq_unit_tests
Bug: 142326204
Change-Id: Ice9c28c3d0df064ea43c31950b3438d2e0d19063
diff --git a/tests/msgq/1.0/ITestMsgQ.hal b/tests/msgq/1.0/ITestMsgQ.hal
index 112270a..bd10237 100644
--- a/tests/msgq/1.0/ITestMsgQ.hal
+++ b/tests/msgq/1.0/ITestMsgQ.hal
@@ -31,7 +31,7 @@
      *
      * @return ret True if the setup is successful.
      */
-    configureFmqSyncReadWrite(fmq_sync<uint16_t> mqDesc) generates(bool ret);
+    configureFmqSyncReadWrite(fmq_sync<int32_t> mqDesc) generates(bool ret);
 
     /**
      * This method requests the service to return an MQDescriptor to
@@ -46,7 +46,7 @@
      * @return mqDesc This structure describes the unsynchronized FMQ that was
      * set up by the service. Client can use it to set up the FMQ at its end.
      */
-    getFmqUnsyncWrite(bool configureFmq) generates(bool ret, fmq_unsync<uint16_t> mqDesc);
+    getFmqUnsyncWrite(bool configureFmq) generates(bool ret, fmq_unsync<int32_t> mqDesc);
 
     /**
      * This method request the service to write into the synchronized read/write