i386/cpu: Update cache topology with machine's configuration

i386/cpu: Update cache topology with machine's configuration

User will configure smp cache topology via -machine smp-cache.

For this case, update the x86 CPUs' cache topology with user's
configuration in MachineState.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20250110145115.1574345-4-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>