Do not set displayName in BaseQtVersion

This will trigger a run of qmake -query which depends on a virtual
method. Set the display name in the derived Qt versions instead.

Change-Id: I47380fd25d38a2cf748a26e9c8324f3b23cb3b39
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/remotelinux/embeddedlinuxqtversion.cpp

@@ -44,7 +44,9 @@ EmbeddedLinuxQtVersion::EmbeddedLinuxQtVersion()
 
 EmbeddedLinuxQtVersion::EmbeddedLinuxQtVersion(const Utils::FileName &path, bool isAutodetected, const QString &autodetectionSource)
     : BaseQtVersion(path, isAutodetected, autodetectionSource)
-{ }
+{
+    setDisplayName(defaultDisplayName(qtVersionString(), path, false));
+}
 
 EmbeddedLinuxQtVersion::~EmbeddedLinuxQtVersion()
 { }