scsi: ufs: Move the struct ufs_ref_clk definition

Move the definition of this data structure since it is only used in a
single source file.

Link: https://lore.kernel.org/r/20220419225811.4127248-28-bvanassche@acm.orgTested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ufs/ufs.h

@@ -415,11 +415,6 @@ enum ufs_ref_clk_freq {
 	REF_CLK_FREQ_INVAL	= -1,
 };
 
-struct ufs_ref_clk {
-	unsigned long freq_hz;
-	enum ufs_ref_clk_freq val;
-};
-
 /* Query response result code */
 enum {
 	QUERY_RESULT_SUCCESS                    = 0x00,

drivers/scsi/ufs/ufshcd.c

@@ -7959,6 +7959,11 @@ static int ufshcd_device_geo_params_init(struct ufs_hba *hba)
 	return err;
 }
 
+struct ufs_ref_clk {
+	unsigned long freq_hz;
+	enum ufs_ref_clk_freq val;
+};
+
 static struct ufs_ref_clk ufs_ref_clk_freqs[] = {
 	{19200000, REF_CLK_FREQ_19_2_MHZ},
 	{26000000, REF_CLK_FREQ_26_MHZ},