delayacct: fix build regression on accounting tool

The accounting tool was modified for the original ABI using a custom
'timespec64' type in linux/taskstats.h, which I changed to use the regular
__kernel_timespec type, causing a build failure:

getdelays.c:202:45: warning: 'struct timespec64' declared inside parameter list will not be visible outside of this definition or declaration

202 | static const char *format_timespec64(struct timespec64 *ts)
| ^~~~~~~~~~

Change the tool to match the updated header.

Link: https://lkml.kernel.org/r/[e-mail]
Fixes: 503efe850c74 ("delayacct: add timestamp of delay max")
Fixes: f06e31eef4c1 ("delayacct: fix uapi timespec64 definition")
Signed-off-by: Arnd Bergmann <[e-mail]>
Reported-by: kernel test robot <[e-mail]>
Closes: https://lore.kernel.org/r/[e-mail]/
Signed-off-by: Andrew Morton <[e-mail]>

tools/accounting/getdelays.c

···
 #define delay_ms(t) (t / 1000000ULL)
 
 /*
- * Format timespec64 to human readable string (YYYY-MM-DD HH:MM:SS)
+ * Format __kernel_timespec to human readable string (YYYY-MM-DD HH:MM:SS)
  * Returns formatted string or "N/A" if timestamp is zero
  */
-static const char *format_timespec64(struct timespec64 *ts)
+static const char *format_timespec(struct __kernel_timespec *ts)
 {
 	static char buffer[32];
 	struct tm tm_info;
-	time_t time_sec;
+	__kernel_time_t time_sec;
 
 	/* Check if timestamp is zero (not set) */
 	if (ts->tv_sec == 0 && ts->tv_nsec == 0)
 		return "N/A";
 
-	time_sec = (time_t)ts->tv_sec;
+	time_sec = ts->tv_sec;
 
 	/* Use thread-safe localtime_r */
 	if (localtime_r(&time_sec, &tm_info) == NULL)
···
 				average_ms((double)(t)->cpu_delay_total, (t)->cpu_count), \
 				delay_ms((double)(t)->cpu_delay_max), \
 				delay_ms((double)(t)->cpu_delay_min), \
-				format_timespec64(&(t)->cpu_delay_max_ts)); \
+				format_timespec(&(t)->cpu_delay_max_ts)); \
 		} else if (version >= 16) { \
 			printf("%-10s%15s%15s%15s%15s%15s%15s%15s\n", \
 				"CPU", "count", "real total", "virtual total", \
···
 				average_ms((double)(t)->total, (t)->count), \
 				delay_ms((double)(t)->max), \
 				delay_ms((double)(t)->min), \
-				format_timespec64(&(t)->max_ts)); \
+				format_timespec(&(t)->max_ts)); \
 		} else if (version >= 16) { \
 			printf("%-10s%15s%15s%15s%15s%15s\n", \
 				name, "count", "delay total", "delay average", \