Add new config.h that does not need entropy source
diff --git a/ChangeLog b/ChangeLog
index ca3dd1a..2725f38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,8 @@
    * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
      configure the maximum length of a file path that can be buffered when
      calling mbedtls_x509_crt_parse_path().
+   * Added a configuration file config-no-entropy.h that enables a subset of
+     library features that do not require an entropy source.
 
 Bugfix
    * Fix for platform time abstraction to avoid dependency issues where a build