[mlir][tosa] Add broadcasting case for tosa.resize to linalg implementation

When lowering tosa.resize it is possible there is an unary input dimension.
Lowering to a new tosa.resize and explicit broadcast simplifies the
tosa.resize operation to avoid recomputing the identical broadcasted values.

This change reworks the broadcast optimization reuse the tosa.resize generic
implementation.

Reviewed By: jpienaar

Differential Revision: https://reviews.llvm.org/D139963