more trivial signedness fixes in drivers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/ata/ata_piix.c

@@ -1122,7 +1122,7 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev,
 					 const struct piix_map_db *map_db)
 {
 	struct piix_host_priv *hpriv = pinfo[0].private_data;
-	const unsigned int *map;
+	const int *map;
 	int i, invalid_map = 0;
 	u8 map_value;
 

drivers/ata/sata_via.c

@@ -505,7 +505,7 @@ static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	int rc;
 	struct ata_host *host;
 	int board_id = (int) ent->driver_data;
-	const int *bar_sizes;
+	const unsigned *bar_sizes;
 
 	if (!printed_version++)
 		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");