turnip: remove use of tu_cs_entry for draw states

turnip: remove use of tu_cs_entry for draw states

The tu_cs_entry struct doesn't match well what we want for SET_DRAW_STATE
and CP_INDIRECT_BUFFER (requires extra steps to get iova and size), so
start phasing it out.

Additionally, use newly added tu_cs_draw_state where it doesn't require any
effort (it requires a fixed size, but gets rid of the extra end_sub_stream)

Note this also changes the behavior of CmdBindDescriptorSets for compute to
emit directly in cmd->cs instead of doing through a CP_INDIRECT.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5558>