acpi/tests/avocado/bits: import smilatency test from bits in order to disable it

acpi/tests/avocado/bits: import smilatency test from bits in order to disable it

Add smilatency test script in the bits avocado tests from bios-bits. No changes
have been made to the original test script. The test will be disabled in the
subsequent patch.

CC: peter.maydell@linaro.org
CC: crosa@redhat.com
CC: philmd@linaro.org
CC: bleal@redhat.com
CC: mst@redhat.com
CC: wainersm@redhat.com
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Message-id: 20240108103643.4434-2-anisinha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>