Fix mbed examples after minar upgrade
diff --git a/yotta/data/example-hashing/main.cpp b/yotta/data/example-hashing/main.cpp
index 4ef3665..7603cbe 100644
--- a/yotta/data/example-hashing/main.cpp
+++ b/yotta/data/example-hashing/main.cpp
@@ -167,7 +167,7 @@
 }
 
 void app_start(int, char*[]) {
-    minar::Scheduler::postCallback(FunctionPointer0<void>(run).bind());
+    minar::Scheduler::postCallback(mbed::util::FunctionPointer0<void>(run).bind());
 }
 
 #else