Fix disabled text color of TextArea
Fix disabled text color of TextArea

Change-Id: I5d09aa0da0675bce961f6445982cae16b894dbf1
Reviewed-by: David Edmundson <2fbbc4cabedec4253c2922f51eef7aa8c2146499@kde.org>
Reviewed-by: J-P Nurmi <b84a892f57a298bb5dae653b4e188948a84d5549@digia.com>

mizukusak/qtquickcontrols,drgvond/qtquickcontrols,kobolabs/qtquickcontrols,kobolabs/qtquickcontrols,drgvond/qtquickcontrols,drgvond/qtquickcontrols,mizukusak/qtquickcontrols,mizukusak/qtquickcontrols,kobolabs/qtquickcontrols