regulator: core: Clarify grammar for dummy help text

Too many thens in the if...then clause.
Reported-by: NMichael Jones <michael.jones@matrix-vision.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

drivers/regulator/Kconfig

@@ -33,9 +33,8 @@ config REGULATOR_DUMMY
 	help
 	  If this option is enabled then when a regulator lookup fails
 	  and the board has not specified that it has provided full
-	  constraints then the regulator core will provide an always
-	  enabled dummy regulator will be provided, allowing consumer
-	  drivers to continue.
+	  constraints the regulator core will provide an always
+	  enabled dummy regulator, allowing consumer drivers to continue.
 
 	  A warning will be generated when this substitution is done.