tests: bios-tables-test: Rename smbios type 4 related test functions

tests: bios-tables-test: Rename smbios type 4 related test functions

In fact, type4-count, core-count, core-count2, thread-count and
thread-count2 are tested with KVM not TCG.

Rename these test functions to reflect KVM base instead of TCG.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20231127160202.1037290-1-zhao1.liu@linux.intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>