Adding changelog file

Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
diff --git a/ChangeLog.d/issue4564.txt b/ChangeLog.d/issue4564.txt
new file mode 100644
index 0000000..286c31b
--- /dev/null
+++ b/ChangeLog.d/issue4564.txt
@@ -0,0 +1,3 @@
+Removals
+    * Remove all instances of MBEDTLS_SSL_MINOR_VERSION_1 and
+      MBEDTLS_SSL_MINOR_VERSION_2 and related dead code and tests. Fixes #4564.