Make it possible to strobe/enable different granularities on memory interfaces

### Motivation

Sometimes a strobe/enable is on a byte boundary, but other times it might be per word or some other granularity. It would be nice if the interface supported a configurable granularity instead of just bytes.

### Desired solution

Modify `StrobeDataPortInterface` to support a configurable partitioning of enables other than just bytes.

### Alternatives considered

_No response_

### Additional details

_No response_

Start by locating StrobeDataPortInterface in the rohd-hcl repository and reading how its current byte-based enables are represented. Define the expected partitioning semantics for word or other granularities, then verify that the interface supports configurable enable groupings without breaking existing byte behavior.

Written by the indexing model from the issue text.