Moving to TESTS_COMPONENT allows files to be placed
within the amd-smi-lib-test package.
Previously, was put within the amd-smi-lib package,
which will never be triggered for installation with
latest changes.
Change-Id: Id49dbe69bfc7d5bd1af403c28b946fe1edf64d8e
Signed-off-by: Charis Poag <Charis.Poag@amd.com>