drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer

drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer

BugLink: https://bugs.launchpad.net/bugs/1870604
[ Upstream commit 3ba52ad55b533760a1f65836aa0ec9d35e36bb4f ]

Fix bogus NULL checks on the return value of acpi_cpu_get_madt_gicc()
by checking for a 0 'gicc->performance_interrupt' value instead.

Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>