cso: set index_bounds_valid = true for arrays draws
The min/max indices are valid. Set the bit to true to indicate that.
Fixes glClear (+ clear_with_quads) on nouveau.
Fixes: 72ff5309 (gallium: add pipe_draw_info::index_bounds_valid) Signed-off-by: Ilia Mirkin imirkin@alum.mit.edu Reported-by: Simon Ser contact@emersion.fr