An OTP device isn't really a parallel flash, and neither are eFuses.
More fast-and-lose use of IF_PFLASH may exist in the tree, and maybe of
other interface types, too.
This patch introduces IF_OTHER. The patch after next uses it for an
EEPROM device.
Do we want IF_OTHER?
If no, I guess we get to abuse IF_PFLASH some more.
If yes, I guess we should use IF_PFLASH only for actual parallel flash
memory going forward. Cleaning up existing abuse of IF_PFLASH may not
be worth the trouble, though.
Thoughts?