scsi: ufs: ufs-exynos: Fix static checker warning

clk_get_rate() returns unsigned long and currently this driver stores the
return value in u32 type, resulting the below warning:

Fixed smatch warnings:

        drivers/scsi/ufs/ufs-exynos.c:286 exynos_ufs_get_clk_info()
        warn: wrong type for 'ufs->mclk_rate' (should be 'ulong')

        drivers/scsi/ufs/ufs-exynos.c:287 exynos_ufs_get_clk_info()
        warn: wrong type for 'pclk_rate' (should be 'ulong')

Link: https://lore.kernel.org/r/20210819171131.55912-1-alim.akhtar@samsung.com
Fixes: 55f4b1f ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufs-exynos.c

@@ -260,7 +260,7 @@ static int exynos_ufs_get_clk_info(struct exynos_ufs *ufs)
 	struct ufs_hba *hba = ufs->hba;
 	struct list_head *head = &hba->clk_list_head;
 	struct ufs_clk_info *clki;
-	u32 pclk_rate;
+	unsigned long pclk_rate;
 	u32 f_min, f_max;
 	u8 div = 0;
 	int ret = 0;
@@ -299,7 +299,7 @@ static int exynos_ufs_get_clk_info(struct exynos_ufs *ufs)
 	}
 
 	if (unlikely(pclk_rate < f_min || pclk_rate > f_max)) {
-		dev_err(hba->dev, "not available pclk range %d\n", pclk_rate);
+		dev_err(hba->dev, "not available pclk range %lu\n", pclk_rate);
 		ret = -EINVAL;
 		goto out;
 	}

drivers/scsi/ufs/ufs-exynos.h

@@ -184,7 +184,7 @@ struct exynos_ufs {
 	u32 pclk_div;
 	u32 pclk_avail_min;
 	u32 pclk_avail_max;
-	u32 mclk_rate;
+	unsigned long mclk_rate;
 	int avail_ln_rx;
 	int avail_ln_tx;
 	int rx_sel_idx;