perf record doesn't work on rtd129x SoC

[Wang YanQing]

Hi Andreas Färber!

I use "perf record" to debug performance issue on RTD1296 SOC, it does't work, but
the "perf stat" is ok!

After some dig in the kernel, I find the reason is no pmu overflow interrupt, I think
below pmu configuration isn't right for RTD1296:
"
        arm_pmu: arm-pmu {
                compatible = "arm,cortex-a53-pmu";
                interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
        };
"

We need 4 PMU SPI for RTD1296 (4 cores), and I guess the 48 isn't right too.

Any suggestion is welcome.

Thanks!