tests/unit: Rename test-x86-cpuid.c to test-x86-topo.c

tests/unit: Rename test-x86-cpuid.c to test-x86-topo.c

The tests in this file actually test the APIC ID combinations.
Rename to test-x86-topo.c to make its name more in line with its
actual content.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Babu Moger <babu.moger@amd.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231024090323.1859210-3-zhao1.liu@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>