ARM: perf: support percpu irqs for the CPU PMU

Some CPU PMUs are wired up with one PPI for all the CPUs instead
of with a different SPI for each CPU. Add support for these
devices.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --cc arch/arm/kernel/perf_event.c
Simple merge

diff --cc arch/arm/kernel/perf_event_cpu.c
Simple merge