ata: sata_rcar: Fix compilation warning

When compiling with clang and W=1, the following warning is generated:

drivers/ata/sata_rcar.c:878:15: error: cast to smaller integer type
'enum sata_rcar_type' from 'const void *'
[-Werror,-Wvoid-pointer-to-enum-cast]
        priv->type = (enum sata_rcar_type)of_device_get_match_data(dev);
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fix this by using a cast to unsigned long to match the "void *" type
size returned by of_device_get_match_data().

Signed-off-by: Damien Le Moal <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Reviewed-by: Sergey Shtylyov <[email protected]>

Author: Damien Le Moal

drivers/ata/sata_rcar.c

@@ -875,7 +875,7 @@ static int sata_rcar_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	priv->type = (enum sata_rcar_type)of_device_get_match_data(dev);
+	priv->type = (unsigned long)of_device_get_match_data(dev);
 
 	pm_runtime_enable(dev);
 	ret = pm_runtime_get_sync(dev);