Fix build: update to QPA API

wltouch.cpp:146:63: error: conversion from ‘QVector<QPointF>’ to non-scalar type ‘QList<QPointF>’ requested

Change-Id: Ibcf6c547fa1eeee2ccd568f60c10146ab104ce81
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

src/compositor/wayland_wrapper/wltouch.cpp

@@ -143,7 +143,7 @@ void TouchExtensionGlobal::postTouchEvent(QTouchEvent *event, Surface *surface)
             uint32_t pressure = uint32_t(tp.pressure() * 255);
 
             wl_array *rawData = 0;
-            QList<QPointF> rawPosList = tp.rawScreenPositions();
+            QVector<QPointF> rawPosList = tp.rawScreenPositions();
             int rawPosCount = rawPosList.count();
             if (rawPosCount) {
                 rawPosCount = qMin(maxRawPos, rawPosCount);