Add `XE2_LPG` family name #4328

Job	Run time
download-OpenCL-Clang	10s
build-SPIRV-LLVM-Translator (20.04, 14)	12s
build-SPIRV-LLVM-Translator (22.04, 14)	14s
build-SPIRV-LLVM-Translator (22.04, 15, true)	10s
build-IGC (20.04, 14, gcc)	55m 0s
build-IGC (20.04, 14, clang)	22m 54s
build-IGC (22.04, 14, gcc)	44m 42s
build-IGC (22.04, 14, clang)	27m 23s
build-IGC (22.04, 15, gcc, true)	40m 58s
	3h 11m 43s

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