selftests/alsa:Fix printf format string in pcm-test.c

Inside of test_pcm_time() arguments are printed via printf
but '%d' is used to print @flags (of type unsigned int).
Use '%u' instead, just like we do everywhere else.
Signed-off-by: Zhu Jun <zhujun2@cmss.chinamobile.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20240626084859.4350-1-zhujun2@cmss.chinamobile.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

tools/testing/selftests/alsa/pcm-test.c

@@ -383,7 +383,7 @@ static void test_pcm_time(struct pcm_data *data, enum test_class class,
 		goto __close;
 	}
 	if (rrate != rate) {
-		snprintf(msg, sizeof(msg), "rate mismatch %ld != %d", rate, rrate);
+		snprintf(msg, sizeof(msg), "rate mismatch %ld != %u", rate, rrate);
 		goto __close;
 	}
 	rperiod_size = period_size;