[Mosaic] Add support for remote DMAs and semaphores in megacore mode #20860
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[Mosaic] Add support for remote DMAs and semaphores in megacore mode
The change to tpu.td is not backwards compatible, but I made it so using the
newly added Mosaic stability layer. It's been a good exercise and it seems to
be working just fine.
Co-authored-by: Sharad Vikram sharadmv@google.com