scsi: ufs: remove set but not used variable 'val'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/ufs/ufs-qcom.c: In function ufs_qcom_pwr_change_notify:
drivers/scsi/ufs/ufs-qcom.c:808:6: warning: variable val set but not used [-Wunused-but-set-variable]

Fixes: 1e1e465 ("scsi/ufs: qcom: Remove ufs_qcom_phy_*() calls from host")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufs-qcom.c

@@ -800,7 +800,6 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
 				struct ufs_pa_layer_attr *dev_max_params,
 				struct ufs_pa_layer_attr *dev_req_params)
 {
-	u32 val;
 	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
 	struct ufs_dev_params ufs_qcom_cap;
 	int ret = 0;
@@ -869,8 +868,6 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
 			ret = -EINVAL;
 		}
 
-		val = ~(MAX_U32 << dev_req_params->lane_tx);
-
 		/* cache the power mode parameters to use internally */
 		memcpy(&host->dev_req_params,
 				dev_req_params, sizeof(*dev_req_params));