ahci: imx: ahci_imx_softreset() can be static

Acked-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

drivers/ata/ahci_imx.c

@@ -140,7 +140,7 @@ static void ahci_imx_error_handler(struct ata_port *ap)
 	imxpriv->no_device = true;
 }
 
-int ahci_imx_softreset(struct ata_link *link, unsigned int *class,
+static int ahci_imx_softreset(struct ata_link *link, unsigned int *class,
 		       unsigned long deadline)
 {
 	struct ata_port *ap = link->ap;