drm: xlnx: zynqmp: Fix max dma segment size

Fix "mapping sg segment longer than device claims to support" warning by
setting the max segment size.

Fixes: d76271d ("drm: xlnx: DRM/KMS driver for Xilinx ZynqMP DisplayPort Subsystem")
Reviewed-by: Sean Anderson <[email protected]>
Tested-by: Sean Anderson <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: tomba

drivers/gpu/drm/xlnx/zynqmp_dpsub.c

@@ -201,6 +201,8 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	dma_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
+
 	/* Try the reserved memory. Proceed if there's none. */
 	of_reserved_mem_device_init(&pdev->dev);