radeonsi: replace llvm ls/hs interface lds ops with nir lowered ones

Use ac nir lower pass to generate these lds load/store ops explicitly.

Signed-off-by: Qiang Yu <yuq825@gmail.com>
214 jobs for !16418 with topic/llvm-lshs-io-to-nir in 7 seconds (queued for 15 seconds)
merge request