NuMaker without external SRAM configuration

Revision:
0:763694026416
Child:
1:a3b9047e5ae0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Wed Mar 01 02:56:10 2017 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#5faf4b26c5954d15c7c1cccac6498e0c690ad101