Sleep instruction removed from S2 instruction set.
LDx/STx instructions descritioin fix offset range to 13 bits (11 bits signed 32 bit words offset).
Remove I2C RD/WR operations from S2.
Rename all the files which will be edited substantially in the next commit, without changing their
contents
Docs will not build for this ocmmit.
This is done so that git doesn't decide we renamed xxx-cmake -> xxx-legacy in the next commit, which
is what it will infer otherwise (and makes rebasing more of a pain than it should be)
The argument to ulp_run should be expressed in 32-bit words. Both the
address of ulp_entry and RTC_SLOW_MEM already are uint32_t*, so their
difference is the difference in addresses divided by sizeof(uint32_t).
Therefore the extra division by sizeof(uint32_t) is not needed.
