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.