Install gputop on imx8mp verdin

Hi @kishan

Cannot find gpuinfo.sh as well as gpu-viv-tools in krikstone and dunfell for imx8mp.
in layer directory

Add IMAGE_INSTALL_append= " imx-test" in local.conf file and build new image.gpuinfo.sh can be found inside the /unit_tests/GPU/ directory.Follow this link for gpu profiling steps.