Android debugging: Fix pulling of app_process

/system/bin/app_process can be a link to e.g. /system/bin/app_process32,
which we resolve first via "adb shell" before calling "adb pull".

Task-number: QTCREATORBUG-14201
Change-Id: Ic133cf0bcec3234839680584ff4807f443161e6c
Reviewed-by: hjk <hjk@theqtcompany.com>
Reviewed-by: Daniel Teske <daniel.teske@theqtcompany.com>
Reviewed-by: Alessandro Portale <alessandro.portale@theqtcompany.com>

src/plugins/android/androiddeployqtstep.h

@@ -102,6 +102,7 @@ private:
         AndroidDeployQtStep *other);
     void ctor();
     void runCommand(const QString &program, const QStringList &arguments);
+    QString systemAppProcessFilePath() const;
 
     bool init();
     void run(QFutureInterface<bool> &fi);