dmaengine: owl-dma: fix clang -Wvoid-pointer-to-enum-cast warning

When building with clang 18 I see the following warning:
|       drivers/dma/owl-dma.c:1119:14: warning: cast to smaller integer type
|       'enum owl_dma_id' from 'const void *' [-Wvoid-pointer-to-enum-cast]
|        1119 | od->devid = (enum owl_dma_id)of_device_get_match_data(&pdev->dev);

This is due to the fact that `of_device_get_match_data()` returns a
void* while `enum owl_dma_id` has the size of an int.

Cast result of `of_device_get_match_data()` to a uintptr_t to silence
the above warning for clang builds using W=1

Link: ClangBuiltLinux#1910
Reported-by: Nathan Chancellor <[email protected]>
Signed-off-by: Justin Stitt <[email protected]>
Acked-by: Manivannan Sadhasivam <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: JustinStitt

drivers/dma/owl-dma.c

@@ -1117,7 +1117,7 @@ static int owl_dma_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "dma-channels %d, dma-requests %d\n",
 		 nr_channels, nr_requests);
 
-	od->devid = (enum owl_dma_id)of_device_get_match_data(&pdev->dev);
+	od->devid = (uintptr_t)of_device_get_match_data(&pdev->dev);
 
 	od->nr_pchans = nr_channels;
 	od->nr_vchans = nr_requests;