Fix for CharSequenceCreator test case

The test case testCharSequenceCreator() in TextUtilsTest fails
because the data position is not reset before calling
createFromParcel().

Change-Id: I6d5cc093ff65019ab0d2191bb0bd9c10ae49612b

core/tests/coretests/src/android/text/TextUtilsTest.java

@@ -353,6 +353,7 @@ public class TextUtilsTest extends TestCase {
         assertNull("null CharSequence should generate null from parcel", text);
         p = Parcel.obtain();
         TextUtils.writeToParcel("test", p, 0);
+        p.setDataPosition(0);
         text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(p);
         assertEquals("conversion to/from parcel failed", "test", text);
     }