arch-arm: Fix extra comma in b7ce897f1e

Change-Id: I649f8507ccb6c814b46b0b9b7e39dc912ecd9006
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/16242

src/arch/arm/pmu.cc

@@ -67,7 +67,7 @@ PMU::PMU(const ArmPMUParams *p)
       cycleCounterEventId(p->cycleEventId),
       swIncrementEvent(nullptr),
       reg_pmcr_conf(0),
-      interrupt(nullptr),
+      interrupt(nullptr)
 {
     DPRINTF(PMUVerbose, "Initializing the PMU.\n");