freedreno/a6xx: some register cleanup/updates
Mostly cleanup, except the last patch which documents unknown bits found by the "brute force" method on a650, and for a few of those fields I figured out what they do, like THREADMODE
(use only single wave per SP) , SINGLE_SP
(use only a single SP), THREADSIZE_SCALAR
(use only a single thread per wave).
Also set the newly documented SP_PERFCTR_ENABLE
register in computerator to fix some perfcntrs.