Add mbed include and compile flags around stats_report

Author: kegilbert

stats_report.h

@@ -1,3 +1,8 @@
+#ifndef STATS_REPORT_H
+#define STATS_REPORT
+
+#include "mbed.h"
+
 class SystemReport {
     mbed_stats_heap_t   heap_stats;
     mbed_stats_cpu_t    cpu_stats;
@@ -72,3 +77,5 @@ class SystemReport {
         }
     }
 };
+
+#endif // STATS_REPORT_H