regulator: fan53555: Fix slew_shift setting for tcs4525

Fix trivial copy-paste mistake.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210517010318.1027949-1-axel.lin@ingics.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/fan53555.c

@@ -376,7 +376,7 @@ static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di)
 	case TCS4525_CHIP_ID_12:
 		di->slew_reg = TCS4525_TIME;
 		di->slew_mask = TCS_SLEW_MASK;
-		di->slew_shift = TCS_SLEW_MASK;
+		di->slew_shift = TCS_SLEW_SHIFT;
 
 		/* Init voltage range and step */
 		di->vsel_min = 600000;