qcacmn: Update driver timer APIs according to kernel 4.19

There are some changes to timer APIs in latest kernel,
update driver APIs accordingly to invoke correct kernel
APIs for timer functionalities.

Change-Id: Ie017c8b1ef8237ca34f696c23509519a1187167c
CRs-fixed: 2383574

scheduler/inc/scheduler_api.h

@@ -323,11 +323,11 @@ QDF_STATUS scheduler_deregister_wma_legacy_handler(void);
 
 /**
  * scheduler_mc_timer_callback() - timer callback, gets called at time out
- * @data: unsigned long, holds the timer object.
+ * @timer: holds the mc timer object.
  *
  * Return: None
  */
-void scheduler_mc_timer_callback(unsigned long data);
+void scheduler_mc_timer_callback(qdf_mc_timer_t *timer);
 
 /**
  * scheduler_get_queue_size() - Get the current size of the scheduler queue