lima: fix lima_set_vertex_buffers()

lima: fix lima_set_vertex_buffers()

When setting the vertex buffers, lima calls
util_set_vertex_buffers_mask() to reference and copy buffers. That
function
function adds dst with start_slot internally, so lima should not offset
the destination address again.

This is discovered when comparing with other drivers, and fixed by
removing the extra offset in lima_set_vertex_buffers().

This fixes draws that get translated in u_vbuf, because u_vbuf adds
extra vertex buffers when translating.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Andreas Baierl <ichgeh@imkreisrum.de>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3620>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3620>