build: support native build on linux

Change-Id: Ia48eaaf0f08f186a29516611538dd03b2594aa6a
diff --git a/setavatardialog.cpp b/setavatardialog.cpp
index 745b7ae..aa2d8d9 100644
--- a/setavatardialog.cpp
+++ b/setavatardialog.cpp
@@ -16,12 +16,12 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.   *
 **************************************************************************/
 
-#include <QtMultimedia\QCameraInfo>
+#include <QtMultimedia/QCameraInfo>
 #include <QFileDialog>
 #include <QAbstractScrollArea>
 #include <QScreen>
 #include <QWindow>
-#include <QtMultimedia\QCameraImageCapture>
+#include <QtMultimedia/QCameraImageCapture>
 #include <QBuffer>
 #include <QStandardPaths>