Valgrind: Fix qbs build

Change-Id: Ia2152665213dcc89358a9898e90dc915be420f6b
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/valgrind/valgrind.qbs

@@ -10,6 +10,7 @@ QtcPlugin {
 
     Depends { name: "Core" }
     Depends { name: "AnalyzerBase" }
+    Depends { name: "Debugger" }
     Depends { name: "ProjectExplorer" }
     Depends { name: "TextEditor" }
     Depends { name: "RemoteLinux" }