* Update README in LLM GPU Examples
* Update reference of Intel GPU
* add cpu_embedding=True in comment
* small fixes
* update GPU/README.md and add explanation for cpu_embedding=True
* address comments
* fix small typos
* add backtick for cpu_embedding=True
* remove extra backtick in the doc
* add period mark
* update readme
* Set BIGDL_IMPORT_IPEX default to true, i.e., auto import IPEX for XPU.
* Remove import intel_extension_for_pytorch as ipex from GPU example.
* Add support for bigdl-core-xe-21.