CHANGELOG entry for DEPRECATED_MEMBER_USE split

Change-Id: Ibf5d90a6812181f71c251f064cad6eb890975af9
Reviewed-on: https://dart-review.googlesource.com/c/89840
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6cdf406..8dce680 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,6 +40,13 @@
         `NON_CONST_CALL_TO_LITERAL_CONSTRUCTOR_USING_NEW` when a `@literal`
         const constructor is called in a non-const context (or with `new`).
 
+*   The `DEPRECATED_MEMBER_USE` hint was split into two hints:
+
+    *   `DEPRECATED_MEMBER_USE` reports on usage of `@deprecated` members
+        declared in a different package.
+    *   `DEPRECATED_MEMBER_USE_FROM_SAME_PACKAGE` reports on usage of
+        `@deprecated` members declared in the same package.
+
 #### dart2js
 
 * `--fast-startup` is forced on.  The flag is silently ignored and will be