Restore 3.5.1 ChangeLog

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/ChangeLog b/ChangeLog
index 4ba3164..28c45f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,15 @@
 Mbed TLS ChangeLog (Sorted per branch, date)
 
+= Mbed TLS 3.5.1 branch released 2023-11-06
+
+Changes
+   *  Mbed TLS is now released under a dual Apache-2.0 OR GPL-2.0-or-later
+      license. Users may choose which license they take the code under.
+
+Bugfix
+   * Fix accidental omission of MBEDTLS_TARGET_PREFIX in 3rdparty modules
+     in CMake.
+
 = Mbed TLS 3.5.0 branch released 2023-10-05
 
 API changes
diff --git a/ChangeLog.d/fix-3rdparty-target-prefix.txt b/ChangeLog.d/fix-3rdparty-target-prefix.txt
deleted file mode 100644
index db8ed07..0000000
--- a/ChangeLog.d/fix-3rdparty-target-prefix.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-Bugfix
-   * Fix accidental omission of MBEDTLS_TARGET_PREFIX in 3rdparty modules
-     in CMake.
diff --git a/ChangeLog.d/license.txt b/ChangeLog.d/license.txt
deleted file mode 100644
index 0b6bb1f..0000000
--- a/ChangeLog.d/license.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-Changes
-   *  Mbed TLS is now released under a dual Apache-2.0 OR GPL-2.0-or-later
-      license. Users may choose which license they take the code under.