mips: remove saf1761

[imp]

Summary

The saf1761 OTG support was only for mips targets (BERI?). Retire it.

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[• hselasky]

Hi Bjoern,

Can you confirm if the saf1761 OTG driver is still being used at Cambridge for the cheri?

--HPS

[• hselasky]

imp: Removing the files from the build is OK, but I wonder if we should keep it around. I'm not sure.

It's an old chip though.

[imp]

In D33706#761880, @hselasky wrote:

imp: Removing the files from the build is OK, but I wonder if we should keep it around. I'm not sure.

It's an old chip though.

Generally we've been removing old stuff that's no longer referenced. It's still around in the
branches if people need it (or in older hashes). I'm inclined to remove it unless @bz unexpectedly
says Cambridge still needs it.

[brooks]

Go ahead and remove it. We're not using that platform (Terasic DE4) except for MIPS and MIPS is gone (🎉).