dmaengine: dw: drop unused module alias

The driver does not support anything but OF and ACPI probe since commit
b375741 ("dmaengine: dw: platform: Use struct dw_dma_chip_pdata")
so drop the unused platform module alias along with the now unnecessary
driver name define.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20251120114524.8431-3-johan@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: jhovold

drivers/dma/dw/platform.c

@@ -21,8 +21,6 @@
 
 #include "internal.h"
 
-#define DRV_NAME	"dw_dmac"
-
 static int dw_probe(struct platform_device *pdev)
 {
 	const struct dw_dma_chip_pdata *match;
@@ -190,7 +188,7 @@ static struct platform_driver dw_driver = {
 	.remove		= dw_remove,
 	.shutdown       = dw_shutdown,
 	.driver = {
-		.name	= DRV_NAME,
+		.name	= "dw_dmac",
 		.pm	= pm_sleep_ptr(&dw_dev_pm_ops),
 		.of_match_table = of_match_ptr(dw_dma_of_id_table),
 		.acpi_match_table = ACPI_PTR(dw_dma_acpi_id_table),
@@ -211,4 +209,3 @@ module_exit(dw_exit);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller platform driver");
-MODULE_ALIAS("platform:" DRV_NAME);