radv: only copy the dynamic states that changed

radv: only copy the dynamic states that changed

When binding a new pipeline, we applied all dynamic states
without checking if they really need to be re-emitted. This
doesn't seem to be useful for the meta operations because only
the viewports/scissors are updated.

This should reduce the number of commands added to the IB
when a new graphics pipeline is bound.

Also, rename radv_dynamic_state_copy() to radv_bind_dynamic_state()
and set the dirty flags directly there.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>