qt53d: fix typo in <pkg>_SOURCES

The QT53D_SOURCE variable uses mismatch QT5SVG_VERSION variable.

This commit fixes the typo by using the appropriate QT53D_VERSION
variable.

Signed-off-by: Gaël PORTAY <gael.portay@savoirfairelinux.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt5/qt53d/qt53d.mk

@@ -6,7 +6,7 @@
 
 QT53D_VERSION = $(QT5_VERSION)
 QT53D_SITE = $(QT5_SITE)
-QT53D_SOURCE = qt3d-opensource-src-$(QT5SVG_VERSION).tar.xz
+QT53D_SOURCE = qt3d-opensource-src-$(QT53D_VERSION).tar.xz
 QT53D_DEPENDENCIES = qt5base qt5declarative
 QT53D_INSTALL_STAGING = YES