report: fix '-m inst' case
Right now if the string 'inst' is one of the measurements it is replaced by 'instructions'. This was done because some drivers were reporting it as 'inst' and others as 'instructions', and I guess that also to make the final report easier to read.
But this causes using '-m inst' to fail, as 'instructions' is used to fill the dictionary. As I found somewhat counterintuitive to assume that the user should know about that replacement, this patch just adds the same replacements on other parts of the code.
An alternative would be remove any 'inst' to 'instructions' replacement, as now drivers output is more consistent. But again, it is easier to read the report with 'instructions'.