Android: vexpress: Enable CONFIG_ARCH_VEXPRESS_TC2_PM

Now we have the problematic C1 idle state disabled by default [1],
we can enable the PM code, which gets us working cpufreq and C0
idle states.

[1] Patch "ARM: vexpress: fix CPU idle C1 state enablement"

Signed-off-by: Jon Medhurst <tixy@linaro.org>
1 file changed