TinyCrypt SSL: Extend scope of CliKeyExchange parsing

Previously, TinyCrypt was only used for ECDHE-ECDSA/RSA ciphersuites.
This commit is a step towards using it for _all_ ciphersuites involving
ECDHE (specifically: ECDHE, ECDHE-PSK, static ECDH), extending the scope
of the use of TinyCrypt in the parsing of the ClientKeyExchange message.
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index de3d57c..1c1ca32 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -4219,9 +4219,13 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
 #if defined(MBEDTLS_USE_TINYCRYPT)
     if( mbedtls_ssl_suite_get_key_exchange( ciphersuite_info )
-        == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA                    ||
+        == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA ||
         mbedtls_ssl_suite_get_key_exchange( ciphersuite_info )
-        == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA )
+        == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA ||
+        mbedtls_ssl_suite_get_key_exchange( ciphersuite_info )
+        == MBEDTLS_KEY_EXCHANGE_ECDH_RSA ||
+        mbedtls_ssl_suite_get_key_exchange( ciphersuite_info )
+        == MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA )
     {
         ((void) ret);
         if( mbedtls_ssl_ecdh_read_peerkey( ssl, &p, end ) != 0 )