dmaengine: sprd: drop unused module alias

The driver has never supported anything but OF probe so drop the unused
platform module alias.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20251120114524.8431-9-johan@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: jhovold

drivers/dma/sprd-dma.c

@@ -1311,4 +1311,3 @@ MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("DMA driver for Spreadtrum");
 MODULE_AUTHOR("Baolin Wang <baolin.wang@spreadtrum.com>");
 MODULE_AUTHOR("Eric Long <eric.long@spreadtrum.com>");
-MODULE_ALIAS("platform:sprd-dma");