dmaengine: img-mdc: remove incorrect of_match_ptr annotation

Building with W=1 shows a warning about of_ftpm_tee_ids being unused when
CONFIG_OF is disabled:

    drivers/dma/img-mdc-dma.c:863:34: error: unused variable 'mdc_dma_of_match' [-Werror,-Wunused-const-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250225163315.4168033-1-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: arndb

drivers/dma/img-mdc-dma.c

@@ -1073,7 +1073,7 @@ static struct platform_driver mdc_dma_driver = {
 	.driver = {
 		.name = "img-mdc-dma",
 		.pm = &img_mdc_pm_ops,
-		.of_match_table = of_match_ptr(mdc_dma_of_match),
+		.of_match_table = mdc_dma_of_match,
 	},
 	.probe = mdc_dma_probe,
 	.remove = mdc_dma_remove,