KVM: MTRR: remove mtrr_state.have_fixed

vMTRR does not depend on any host MTRR feature and fixed MTRRs have always
been implemented, so drop this field

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/x86.c

@@ -7379,7 +7379,6 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 {
 	int r;
 
-	vcpu->arch.mtrr_state.have_fixed = 1;
 	r = vcpu_load(vcpu);
 	if (r)
 		return r;