configs: enable smbios command on qemu_arm64_defconfig

We have a Python test the copying of SMBIOS tables from QEMU.
To make use of the test we need the smbios command.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>