mbed library sources, mbed-dev only for TYBLE16

Fork of mbed-dev by mbed official

Please refer flowing link.
/users/kenjiArai/notebook/tyble16-module-will-become-a-mbed-family--mbedliza/

Revision:
167:e84263d55307
Parent:
166:c97ed07ec1a8
--- a/targets/TARGET_NORDIC/TARGET_NRF5/objects.h	Thu Jun 08 15:02:37 2017 +0100
+++ b/targets/TARGET_NORDIC/TARGET_NRF5/objects.h	Wed Jun 21 17:46:44 2017 +0100
@@ -85,6 +85,10 @@
     uint32_t placeholder;
 };
 
+struct trng_s {
+    uint32_t placeholder;
+};
+
 #include "gpio_object.h"
 
 #ifdef __cplusplus