[MLIR][LinAlg] Use AnyTypeOf for LinalgOperand for better error msg.
Previously, `LinalgOperand` is defined with `Type<Or<..,>>`, which produces
not very readable error messages when it is not matched, e.g.,
```
'linalg.generic' op operand #0 must be anonymous_326, but got ....
```
It is simply because the `description` property is not properly set.
This diff switches to use `AnyTypeOf` for `LinalgOperand`, which automatically
generates a description based on the allowed types provided.
As a result, the error message now becomes:
```
'linalg.generic' op operand #0 must be ranked tensor of any type values or strided memref of any type values, but got ...
```
Which is clearer and more informative.
Reviewed By: nicolasvasilache
Differential Revision: https://reviews.llvm.org/D84428