Fixes: Icons not installed

Task:     Found by Sebastian while adjusting Bitrock
RevBy:    Sebastian
AutoTest: None
Details:  -

src/plugins/coreplugin/coreplugin.pro

@@ -167,3 +167,10 @@ RESOURCES += core.qrc \
 contains(QT_CONFIG, webkit) {
     QT += webkit
 }
+
+linux-* {
+    images.files = images/qtcreator_logo_*.png
+    images.path  = /share/pixmaps
+
+    INSTALLS += images
+}