thermal: step_wise: Appease the kernel-doc deity

Replace - with : to appease the kernel-doc gods and fix warnings such as
the following when compiled with make W=1:

linux-amit.git/drivers/thermal/step_wise.c:187: warning: Function
parameter or member 'tz' not described in 'step_wise_throttle'
linux-amit.git/drivers/thermal/step_wise.c:187: warning: Function
parameter or member 'trip' not described in 'step_wise_throttle'

linux.git/drivers/thermal/fair_share.c:79: warning: Function parameter
or member 'tz' not described in 'fair_share_throttle'
linux.git/drivers/thermal/fair_share.c:79: warning: Function parameter
or member 'trip' not described in 'fair_share_throttle'

Signed-off-by: Amit Kucheria <[e-mail]>
Reviewed-by: Viresh Kumar <[e-mail]>
Signed-off-by: Daniel Lezcano <[e-mail]>
Link: https://lore.kernel.org/r/5d48a[e-mail]

drivers/thermal/fair_share.c

···
 
 /**
  * fair_share_throttle - throttles devices associated with the given zone
- * @tz - thermal_zone_device
- * @trip - trip point index
+ * @tz: thermal_zone_device
+ * @trip: trip point index
  *
  * Throttling Logic: This uses three parameters to calculate the new
  * throttle state of the cooling devices associated with the given zone.

drivers/thermal/gov_bang_bang.c

···
 
 /**
  * bang_bang_control - controls devices associated with the given zone
- * @tz - thermal_zone_device
- * @trip - the trip point
+ * @tz: thermal_zone_device
+ * @trip: the trip point
  *
  * Regulation Logic: a two point regulation, deliver cooling state depending
  * on the previous state shown in this diagram:

drivers/thermal/step_wise.c

···
 
 /**
  * step_wise_throttle - throttles devices associated with the given zone
- * @tz - thermal_zone_device
- * @trip - trip point index
+ * @tz: thermal_zone_device
+ * @trip: trip point index
  *
  * Throttling Logic: This uses the trend of the thermal zone to throttle.
  * If the thermal zone is 'heating up' this throttles all the cooling

drivers/thermal/user_space.c

···
 
 /**
  * notify_user_space - Notifies user space about thermal events
- * @tz - thermal_zone_device
- * @trip - trip point index
+ * @tz: thermal_zone_device
+ * @trip: trip point index
  *
  * This function notifies the user space through UEvents.
  */