Changelog: HKDF-Expand and HKDF-Extract as separate algorithms in the PSA API

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/ChangeLog.d/hkdf_extract_expand.txt b/ChangeLog.d/hkdf_extract_expand.txt
new file mode 100644
index 0000000..c394bbd
--- /dev/null
+++ b/ChangeLog.d/hkdf_extract_expand.txt
@@ -0,0 +1,2 @@
+Features
+   * Add HKDF-Expand and HKDF-Extract as separate algorithms in the PSA API.