ab8500-bm: Trivially fix up some incorrect and out-of-date comments

Some of the comments in the ab8500 drivers reflect the behaviour
of the original device. As this driver now supports newer devices
then these comments are now redundant. Also some IRQ comments are
incorrect.

Signed-off-by: Marcus Cooper <marcus.xm.cooper@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Tested-by: Rabin VINCENT <rabin.vincent@stericsson.com>

drivers/power/ab8500_fg.c

@@ -1979,7 +1979,7 @@ static void ab8500_fg_instant_work(struct work_struct *work)
 }
 
 /**
- * ab8500_fg_cc_data_end_handler() - isr to get battery avg current.
+ * ab8500_fg_cc_data_end_handler() - end of data conversion isr.
  * @irq:       interrupt number
  * @_di:       pointer to the ab8500_fg structure
  *
@@ -1999,7 +1999,7 @@ static irqreturn_t ab8500_fg_cc_data_end_handler(int irq, void *_di)
 }
 
 /**
- * ab8500_fg_cc_convend_handler() - isr to get battery avg current.
+ * ab8500_fg_cc_int_calib_handler () - end of calibration isr.
  * @irq:       interrupt number
  * @_di:       pointer to the ab8500_fg structure
  *