package/qt: fix download URL

get.qtsoftware.com doesn't seem to work any more. The links on the Qt
website now points to get.qt.nokia.com, so use that instead.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/qt/qt.mk

@@ -14,7 +14,7 @@
 
 QT_VERSION:=4.5.2
 QT_SOURCE:=qt-embedded-linux-opensource-src-$(QT_VERSION).tar.bz2
-QT_SITE:=http://get.qtsoftware.com/qt/source
+QT_SITE:=http://get.qt.nokia.com/qt/source
 QT_CAT:=$(BZCAT)
 QT_TARGET_DIR:=$(BUILD_DIR)/qt-embedded-linux-opensource-src-$(QT_VERSION)