phy: cadence: Sierra: Explicitly request exclusive reset control

No functional change. Since the reset controls obtained in
Sierra is exclusively used by the Sierra device, use
exclusive reset control request API calls.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20210319124128.13308-8-kishon@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/cadence/phy-cadence-sierra.c

@@ -514,14 +514,14 @@ static int cdns_sierra_phy_get_resets(struct cdns_sierra_phy *sp,
 {
 	struct reset_control *rst;
 
-	rst = devm_reset_control_get(dev, "sierra_reset");
+	rst = devm_reset_control_get_exclusive(dev, "sierra_reset");
 	if (IS_ERR(rst)) {
 		dev_err(dev, "failed to get reset\n");
 		return PTR_ERR(rst);
 	}
 	sp->phy_rst = rst;
 
-	rst = devm_reset_control_get_optional(dev, "sierra_apb");
+	rst = devm_reset_control_get_optional_exclusive(dev, "sierra_apb");
 	if (IS_ERR(rst)) {
 		dev_err(dev, "failed to get apb reset\n");
 		return PTR_ERR(rst);