perf pmu: Add alias match method to fit pmu_name of HiSilicon DDRC

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I63VF5

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pmu_name of DDRC PMU on Hip09 platform is set as "hisi_sllcX_ddrcY_Z",
current match method of pmu_name cannot fit DDRC pmu, so modify the method.
Signed-off-by: NQi Liu <liuqi115@huawei.com>
Signed-off-by: NJunhao He <hejunhao3@huawei.com>

tools/perf/util/pmu.c

@@ -739,7 +739,7 @@ static bool perf_pmu__valid_suffix(const char *pmu_name, char *tok)
 
 	/* Ensure we end in a number */
 	while (1) {
-		if (!isdigit(*p))
+		if (!isdigit(*p) && (*p != '_'))
 			return false;
 		if (*(++p) == 0)
 			break;