WIP: fd_draw helper, and empty POINTLIST w/a..
WIP: split out WFI helper.. mostly just to give an easy debug point
WIP: freedreno: emit markers to scratch registers to triangulate gpu lockup position from post-mortem register dump
WIP: freedreno: avoid stalling at ringbuffer wraparound..
WIP: freedreno: use INDIRECT state load.. todo, add debug option to force DIRECT for easier debugging from cmdstream dump