Add HwParcel::releaseParcel()

To be able to free native Parcel objects as soon
as a transaction is done.

Test: hidl_test_java
Bug: 36088202
Change-Id: I50b3eb7e9fe06958c64575923730d3467e73b9a5
diff --git a/core/java/android/os/HwParcel.java b/core/java/android/os/HwParcel.java
index a265dd0..94fd5b0 100644
--- a/core/java/android/os/HwParcel.java
+++ b/core/java/android/os/HwParcel.java
@@ -219,6 +219,7 @@
     public native final void writeStatus(int status);
     public native final void verifySuccess();
     public native final void releaseTemporaryStorage();
+    public native final void release();
 
     public native final void send();