ata: sata_highbank: remove superfluous cast

hpriv->plat_data is 'void *' so there is no need to cast it to
'struct ecx_plat_data *'.

Cc: Mark Langsdorf <mark.langsdorf@calxeda.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/sata_highbank.c b/drivers/ata/sata_highbank.c
index d4df0bf..65965cf 100644
--- a/drivers/ata/sata_highbank.c
+++ b/drivers/ata/sata_highbank.c
@@ -141,7 +141,7 @@
 					ssize_t size)
 {
 	struct ahci_host_priv *hpriv =  ap->host->private_data;
-	struct ecx_plat_data *pdata = (struct ecx_plat_data *) hpriv->plat_data;
+	struct ecx_plat_data *pdata = hpriv->plat_data;
 	struct ahci_port_priv *pp = ap->private_data;
 	unsigned long flags;
 	int pmp, i;