pc: fix KVM features in pc-1.3 and earlier machine types

Due to a typo, instead of disabling KVM_FEATURE_PV_EOI (bit
6) these machine types are disabling bits 1 and 2, which are
KVM_FEATURE_NOP_IO_DELAY and KVM_FEATURE_MMU_OP.  Not a big deal
because they aren't very important and KVM_FEATURE_MMU_OP is
disabled anyway.  The worst part is actually that KVM_FEATURE_PV_EOI
is remaining enabled.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/i386/pc_piix.c

@@ -406,7 +406,7 @@ static void pc_compat_1_3(MachineState *machine)
 static void pc_compat_1_2(MachineState *machine)
 {
     pc_compat_1_3(machine);
-    x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, KVM_FEATURE_PV_EOI);
+    x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, 1 << KVM_FEATURE_PV_EOI);
 }
 
 static void pc_init_pci_2_2(MachineState *machine)
@@ -483,7 +483,7 @@ static void pc_init_isa(MachineState *machine)
     if (!machine->cpu_model) {
         machine->cpu_model = "486";
     }
-    x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, KVM_FEATURE_PV_EOI);
+    x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, 1 << KVM_FEATURE_PV_EOI);
     enable_compat_apic_id_mode();
     pc_init1(machine, 0, 1);
 }