dmaengine: xilinx: Fix module autoload for OF platform driver

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/xilinx/xilinx_vdma.c

@@ -1349,6 +1349,7 @@ static const struct of_device_id xilinx_vdma_of_ids[] = {
 	{ .compatible = "xlnx,axi-vdma-1.00.a",},
 	{}
 };
+MODULE_DEVICE_TABLE(of, xilinx_vdma_of_ids);
 
 static struct platform_driver xilinx_vdma_driver = {
 	.driver = {