McuSupport: Fix compile

Change-Id: I786fabddbef6dcbf5b9e4c6181cc96cca0e63c4b
Reviewed-by: hjk <hjk@qt.io>

src/plugins/mcusupport/mcusupportsdk.h

@@ -25,13 +25,11 @@
 
 #pragma once
 
+#include <utils/filepath.h>
+
 #include <QSettings>
 #include <QVector>
 
-namespace Utils {
-class FilePath;
-}
-
 namespace McuSupport {
 namespace Internal {