CHROMIUM: configs: Enable CPUFREQ_KVM driver

Enable KVM CPUFreq driver on ARCVM, so that improving ARCVM game
performance.

BUG=b:249685960
TEST=Build
UPSTREAM-TASK=b:256983979

Signed-off-by: Masami Hiramatsu <mhiramat@google.com>
Change-Id: I1d570260a209c31bc6bcf17a892dddc9361df938
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4037181


Reviewed-by: Suleiman Souhlal <suleiman@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>