Add ghc9122llvm to ci #3263

Job	Run time
nix-build	16m 24s
unit-tests	14s
cabal	27s
shellFor-single-package	37s
runghc	20s
plan-extra-hackages	15s
closure-size	10s
maintainer-scripts	13s
hix	1m 8s
docs	19m 43s
tests-benchmarks	26s
shellFor-multiple-package	34s
hydra-ifdLevel-0-and-1	4m 41s
shellFor-not-depends	41s
cabal-doExactConfig	16s
build-extra-hackages	18s
hydra-ifdLevel-3	30m 17s
hydra-ifdLevel-2	13m 33s
multi-target	2m 15s
shellFor-hoogle	46s
hydra-without-remote-builders-ghc9102	5m 46s
check-nix-tools	19s
hydra-without-remote-builders-ghc967	3m 24s
check-path-support	57s
haskell-nix-roots-do-not-require-IFDs	27s
update-docs	9s
check-materialization-concurrency	24s
hix-cabal	1m 27s
	1h 46m 11s

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