uefi: Reformat `use` items in pxe module #6284

Job	Run time
Integration Test (AArch64)	58s
Integration Test (x86_64)	2m 47s
Lints	1m 5s
Unit + Doc Tests	46s
Integration Test (IA-32)	1m 18s
Integration Test (x86_64 Windows)	2m 27s
Build (stable MSRV)	32s
Build (feature permutations)	4m 5s
Build (uefi-raw MSRV)	22s
Nightly (build, test, doc)	1m 36s
Build Standard Binary (nightly)	22s
Test Coverage	55s
Unit + Doc Tests (Miri)	1m 15s
	18m 28s

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