arm64: KVM: pmu: Fix AArch32 cycle counter access

We're missing the handling code for the cycle counter accessed
from a 32bit guest, leading to unexpected results.

Cc: stable@vger.kernel.org # 4.6+
Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
static void reset_bcr(struct kvm_vcpu *vcpu,
		      const struct sys_reg_desc *rd)
{
	vcpu->arch.vcpu_debug_state.dbg_bcr[rd->reg] = rd->val;
}

static void reset_bcr(struct kvm_vcpu *vcpu,
		      const struct sys_reg_desc *rd)
{
	vcpu->arch.vcpu_debug_state.dbg_bcr[rd->reg] = rd->val;
}
