Add dummy stages for `client_hello_process`

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/Makefile b/library/Makefile
index 8c58fb8..13cd7db 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -169,6 +169,7 @@
 	  ssl_tls13_keys.o \
 	  ssl_tls13_client.o \
 	  ssl_tls13_server.o \
+	  ssl_tls13_generic.o \
 	  # This line is intentionally left blank
 
 .SILENT: