kvm tools: Clear presence of performance-energy bias bit

In case if host machine supports performance-energy bias
capability it should not be propagated to KVM hypervisor.

Otherwise the kernel tries to do read MSR_IA32_ENERGY_PERF_BIAS
register and cause kernel panic (general protection fault).

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>