Update stats to fetch Mbed OS version info

TESTS/mbed_platform/stats_sys/main.cpp

@@ -32,6 +32,7 @@ void test_sys_info()
     mbed_stats_sys_t stats;
     mbed_stats_sys_get(&stats);
 
+    TEST_ASSERT_NOT_EQUAL(0, stats.os_version);
 #if defined(__CORTEX_M)
     TEST_ASSERT_NOT_EQUAL(0, stats.cpu_id);
 #endif

platform/mbed_stats.c

@@ -1,6 +1,7 @@
 #include "mbed_assert.h"
 #include "mbed_stats.h"
 #include "mbed_power_mgmt.h"
+#include "mbed_version.h"
 #include <string.h>
 #include <stdlib.h>
 
@@ -123,6 +124,7 @@ void mbed_stats_sys_get(mbed_stats_sys_t *stats)
     memset(stats, 0, sizeof(mbed_stats_sys_t));
 
 #if defined(MBED_SYS_STATS_ENABLED)
+    stats->os_version = MBED_VERSION;
 #if defined(__CORTEX_M)
     stats->cpu_id = SCB->CPUID;
 #endif

platform/mbed_stats.h

@@ -6,7 +6,7 @@
  * @{
  */
 /* mbed Microcontroller Library
- * Copyright (c) 2016-2016 ARM Limited
+ * Copyright (c) 2016-2018 ARM Limited
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.