video: backlight: sky81452-backlight: Fix some kerneldoc issues

Firstly, all lines must begin with a '*'.  Secondly, arg descriptions
must be spelt correctly, so fix misspelling of 'gpioD_enable' and
'short_detecTion_threshold'

Fixes the following W=1 kernel build warning(s):

 drivers/video/backlight/sky81452-backlight.c:46: warning: bad line:                 If it is not defined, default name is lcd-backlight.
 drivers/video/backlight/sky81452-backlight.c:64: warning: Function parameter or member 'gpiod_enable' not described in 'sky81452_bl_platform_data'
 drivers/video/backlight/sky81452-backlight.c:64: warning: Function parameter or member 'short_detection_threshold' not described in 'sky81452_bl_platform_data'

Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/video/backlight/sky81452-backlight.c

@@ -43,13 +43,13 @@
 /**
  * struct sky81452_platform_data
  * @name:	backlight driver name.
-		If it is not defined, default name is lcd-backlight.
- * @gpios_enable:GPIO descriptor which control EN pin
+ *		If it is not defined, default name is lcd-backlight.
+ * @gpiod_enable:GPIO descriptor which control EN pin
  * @enable:	Enable mask for current sink channel 1, 2, 3, 4, 5 and 6.
  * @ignore_pwm:	true if DPWMI should be ignored.
  * @dpwm_mode:	true is DPWM dimming mode, otherwise Analog dimming mode.
  * @phase_shift:true is phase shift mode.
- * @short_detecion_threshold:	It should be one of 4, 5, 6 and 7V.
+ * @short_detection_threshold:	It should be one of 4, 5, 6 and 7V.
  * @boost_current_limit:	It should be one of 2300, 2750mA.
  */
 struct sky81452_bl_platform_data {