anv: update batch chaining to Gfx9 commands

anv: update batch chaining to Gfx9 commands

I don't know this fixes anything but I noticed the generated draws
jump into addresses slightly different from CPU generated jumps.

After checking the genxml, I noticed MI_BATCH_BUFFER_START "Batch
Buffer Start Address" fields have different sizes in Gfx8 & Gfx9+.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25705>