Support for MTL-H & MTL-U iGPU on Linux

[huichuno]

The documentation on IPEX LLM website specifically mentioned support for MTL iGPU on Windows but not on Linux. Please add a documentation to support MTL iGPU on Linux as well.

[leonardozcm]

hi, you may refer to https://ipex-llm.readthedocs.io/en/latest/doc/LLM/Quickstart/install_linux_gpu.html#optional-update-level-zero-on-intel-core-ultra-igpu to checkout your MTL linux machine status and https://ipex-llm.readthedocs.io/en/latest/doc/LLM/Quickstart/benchmark_quickstart.html#run-on-linux to run your code.