feat(timer): add API to set custom parameter to timer (#4596)

Signed-off-by: wangxuedong <wangxuedong@xiaomi.com>

src/misc/lv_timer.c

@@ -267,6 +267,16 @@ void lv_timer_set_repeat_count(lv_timer_t * timer, int32_t repeat_count)
     timer->repeat_count = repeat_count;
 }
 
+/**
+ * Set custom parameter to the lv_timer.
+ * @param timer pointer to a lv_timer.
+ * @param user_data custom parameter
+ */
+void lv_timer_set_user_data(lv_timer_t * timer, void * user_data)
+{
+    timer->user_data = user_data;
+}
+
 /**
  * Reset a lv_timer.
  * It will be called the previously set period milliseconds later.

src/misc/lv_timer.h

@@ -169,6 +169,13 @@ void lv_timer_ready(lv_timer_t * timer);
  */
 void lv_timer_set_repeat_count(lv_timer_t * timer, int32_t repeat_count);
 
+/**
+ * Set custom parameter to the lv_timer.
+ * @param timer pointer to a lv_timer.
+ * @param user_data custom parameter
+ */
+void lv_timer_set_user_data(lv_timer_t * timer, void * user_data);
+
 /**
  * Reset a lv_timer.
  * It will be called the previously set period milliseconds later.