hwmon: (pmbus) Remove trailing whitespaces from Kconfig file

Fix checkpatch issues by removing trailing whitespaces in Kconfig.
Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Link: https://lore.kernel.org/r/c984b88b136a1cde16ce52c5f818886653b0f84a.1642434222.git.sylv@sylv.io
[groeck: Updated subject]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/pmbus/Kconfig

@@ -189,8 +189,8 @@ config SENSORS_LTC2978_REGULATOR
 	depends on SENSORS_LTC2978 && REGULATOR
 	help
 	  If you say yes here you get regulator support for Linear Technology
-	  LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7880, 
-	  LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680, LTM4686, 
+	  LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7880,
+	  LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680, LTM4686,
 	  and LTM4700.
 
 config SENSORS_LTC3815