r600: Bisected: gallium/u_vbuf: use updated pipe_draw_start_count while using draw_vbo breaks some GLES CTS tests
The changes introduced with this commit resulted in some regressions with the GLES CTS, namely an number of tests out of
dEQP-GLES31.functional.draw_indirect.random.*
start to fail.
An attempt to fix this was acdf1a12, but it introduced serious regressions (#4657 (closed)).