psa_generate_key_ext: RSA: support custom public exponent

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/ChangeLog.d/psa_generate_key_ext.txt b/ChangeLog.d/psa_generate_key_ext.txt
new file mode 100644
index 0000000..8340f01
--- /dev/null
+++ b/ChangeLog.d/psa_generate_key_ext.txt
@@ -0,0 +1,3 @@
+Features
+   * The new function psa_generate_key_ext() allows generating an RSA
+     key pair with a custom public exponent.