panfrost: Move the mali_attr.src_offset adjustment to a sub-function

Create a panfrost_vertex_state_upd_attr_offs() helper to adjust
the attr_meta src_offsets.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4083>
1 file changed