dmaengine: dw: Add RZN1 compatible

The Renesas RZN1 DMA IP is very close to the original DW DMA IP, a DMA
router has been introduced to handle the wiring options that have been
added.

Signed-off-by: Miquel Raynal <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Acked-by: Andy Shevchenko <[e-mail]>
Acked-By: Vinod Koul <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/dw/platform.c

···
 #ifdef CONFIG_OF
 static const struct of_device_id dw_dma_of_id_table[] = {
 	{ .compatible = "snps,dma-spear1340", .data = &dw_dma_chip_pdata },
+	{ .compatible = "renesas,rzn1-dma", .data = &dw_dma_chip_pdata },
 	{}
 };
 MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);