ubuntu_boot:log_check: intel_pmu_init warnings on spitfire

[Stefan Bader]

The log check on spitfire(amd64) while doing boot tests reports the following:

[ 0.239511] WARNING: CPU: 0 PID: 1 at /build/linux-3Zqs18/linux-4.4.0/arch/x86/events/intel/core.c:3656 intel_pmu_init+0xc48/0xe03()
[ 0.238545] WARNING: CPU: 0 PID: 1 at /build/linux-Bc7FjL/linux-4.4.0/arch/x86/events/intel/core.c:3656 intel_pmu_init+0xc48/0xe03()
[ 0.239193] WARNING: CPU: 0 PID: 1 at /build/linux-Bc7FjL/linux-4.4.0/arch/x86/events/intel/core.c:3656 intel_pmu_init+0xc48/0xe03()

I don't think this is a regression since we only changed hugetlbfs and the warning is reporting that the HW supports less perf events than set up.

@3654:
        if (x86_pmu.num_counters_fixed > INTEL_PMC_MAX_FIXED) {
                WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
                     x86_pmu.num_counters_fixed, INTEL_PMC_MAX_FIXED);
                x86_pmu.num_counters_fixed = INTEL_PMC_MAX_FIXED;
        }