sched/hrtimer: Rename the callback type to hrtimer_entry_t.

This commit renamed the callback type to `hrtimer_entry_t`, aligning with
the `wdentry_t` in wdog..

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

include/nuttx/hrtimer.h

@@ -65,8 +65,8 @@ typedef struct hrtimer_node_s hrtimer_node_t;
  * timer context and must not block.
  */
 
-typedef CODE uint64_t
-(*hrtimer_cb)(FAR const hrtimer_t *hrtimer, uint64_t expired);
+typedef CODE uint64_t (*hrtimer_entry_t)(FAR const hrtimer_t *hrtimer,
+                                         uint64_t expired);
 
 /* Red-black tree node used to order hrtimers by expiration time */
 
@@ -85,7 +85,7 @@ struct hrtimer_node_s
 struct hrtimer_s
 {
   hrtimer_node_t node;   /* RB-tree node for sorted insertion */
-  hrtimer_cb func;       /* Expiration callback function */
+  hrtimer_entry_t func;  /* Expiration callback function */
   uint64_t expired;      /* Absolute expiration time (ns) */
 };
 

sched/hrtimer/hrtimer_process.c

@@ -71,7 +71,7 @@ void hrtimer_process(uint64_t now)
 {
   FAR hrtimer_t *hrtimer;
   irqstate_t flags;
-  hrtimer_cb func;
+  hrtimer_entry_t func;
   uint64_t expired;
   uint64_t period;
   int cpu = this_cpu();