[SYCL-MLIR]: Argument Promotion Transformation (part 2) (#8730)

Enhance ArgumentPromotion to allow processing calls with only *some*
peelable arguments.
Example: 
``` 
    func.func private @foo(%arg0: memref<?x!llvm.struct<(i32)>>, %arg1: memref<?x!llvm.struct<(f32)>>) {
      %c0 = arith.constant 0 : index
      %0 = "polygeist.subindex"(%arg0, %c0) : (memref<?x!llvm.struct<(i32)>>, index) -> memref<?xi32>
      %1 = sycl.addrspacecast %arg1 : memref<?x!llvm.struct<(f32)>> to memref<?x!llvm.struct<(f32)>, 4>
      ... 
```
Only %arg0 can be peeled because %arg1 is not used by a subindex
instruction.

---------

Signed-off-by: Tiotto, Ettore <[email protected]>

Author: etiotto