Reverted changes to config-split

Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
diff --git a/docs/proposed/config-split.md b/docs/proposed/config-split.md
index aa10903..1baab35 100644
--- a/docs/proposed/config-split.md
+++ b/docs/proposed/config-split.md
@@ -392,6 +392,8 @@
 #define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
 #define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
 #define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
+#define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
+#define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
 //#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
 #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
 #define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED