Integrate llvm/llvm-project@60a1f5a

This patch carries revert of

llvm/llvm-project#136640 because linalg.index folder is segfaulting on inceptionv2 model

llvm/llvm-project#133231. This PR breaks fp_to_subbytes and emulation_subbyte_types on llvm-cpu tests. iree-test-deps.

llvm/llvm-project#137122. StableHLO and Torch-mlir needs to update their usage of GreedyRewriteConfig to use fluent API. i.e enableRegionSimplification = VS setRegionSimplificationLevel

llvm/llvm-project#135970. StableHLO has issue with VHLO_IntegerAttr and APInt not being updated. StableHLO needs to be updated with that PR's change for us to be able to integrate.

llvm/llvm-project#121389. Torch-MLIR needs to be
updated with that PR's change for us to be able to integrate.

Signed-off-by: Stanley Winata <stanley.winata@amd.com>

Author: raikonenfnu