Add java.util.perfs classes into EXPECTED_UPSTREAM

The libcore-compare-upstreams tool is used to guess the version of each
file by comparing the diff.

Bug: 111603149
Test: ojluni_refresh_files
Change-Id: If83ff6beaf860f78ad954f0fdc619b9a84146be1
diff --git a/EXPECTED_UPSTREAM b/EXPECTED_UPSTREAM
index e50f187..e0d222d 100644
--- a/EXPECTED_UPSTREAM
+++ b/EXPECTED_UPSTREAM
@@ -1108,3 +1108,16 @@
 ojluni/src/main/java/java/util/logging/SocketHandler.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/logging/SocketHandler.java
 ojluni/src/main/java/java/util/logging/StreamHandler.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/logging/StreamHandler.java
 ojluni/src/main/java/java/util/logging/XMLFormatter.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/logging/XMLFormatter.java
+ojluni/src/main/java/java/util/prefs/AbstractPreferences.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/AbstractPreferences.java
+ojluni/src/main/java/java/util/prefs/BackingStoreException.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/BackingStoreException.java
+ojluni/src/main/java/java/util/prefs/Base64.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/Base64.java
+ojluni/src/main/java/java/util/prefs/FileSystemPreferences.java,jdk8u/jdk8u121-b13,jdk/src/solaris/classes/java/util/prefs/FileSystemPreferences.java
+ojluni/src/main/java/java/util/prefs/FileSystemPreferencesFactory.java,jdk8u/jdk8u121-b13,jdk/src/solaris/classes/java/util/prefs/FileSystemPreferencesFactory.java
+ojluni/src/main/java/java/util/prefs/InvalidPreferencesFormatException.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/InvalidPreferencesFormatException.java
+ojluni/src/main/java/java/util/prefs/NodeChangeEvent.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/NodeChangeEvent.java
+ojluni/src/main/java/java/util/prefs/NodeChangeListener.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/NodeChangeListener.java
+ojluni/src/main/java/java/util/prefs/PreferenceChangeEvent.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/PreferenceChangeEvent.java
+ojluni/src/main/java/java/util/prefs/PreferenceChangeListener.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/PreferenceChangeListener.java
+ojluni/src/main/java/java/util/prefs/Preferences.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/Preferences.java
+ojluni/src/main/java/java/util/prefs/PreferencesFactory.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/PreferencesFactory.java
+ojluni/src/main/java/java/util/prefs/XmlSupport.java,jdk8u/jdk8u121-b13,jdk/src/share/classes/java/util/prefs/XmlSupport.java