use_power var now uses a define to reflect it not being a bool

NO_POWER_USE
IDLE_POWER_USE
ACTIVE_POWER_USE

holopads now correctly set use_power and the active_power_usage

code/modules/hydroponics/biogenerator.dm

@@ -5,7 +5,7 @@
 	icon_state = "biogen-empty"
 	density = 1
 	anchored = 1
-	use_power = 1
+	use_power = IDLE_POWER_USE
 	idle_power_usage = 40
 	var/processing = 0
 	var/obj/item/weapon/reagent_containers/glass/beaker = null

code/modules/hydroponics/hydroponics.dm

@@ -929,7 +929,7 @@
 	icon = 'icons/obj/hydroponics/equipment.dmi'
 	icon_state = "soil"
 	density = 0
-	use_power = 0
+	use_power = NO_POWER_USE
 	unwrenchable = 0
 
 /obj/machinery/hydroponics/soil/update_icon_hoses()