CTCaer ba95bb7494 bdk: fatfs: improve fat read/write ...

- Convert access from min cluster size to block size
  Also allow read/writes to less than cluster size
- In case of intercluster access throw an error
- Do not error on zero size

On reads buffer still needs to be block (instead of cluster) aligned.
On writes, buffer still needs to be readable out of bounds.

2025-12-17 07:11:51 +02:00

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