radeonsi: don't forget to add HTILE to the buffer list for texturing

radeonsi: don't forget to add HTILE to the buffer list for texturing

This fixes VM faults. Discovered by Samuel Pitoiset.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98975
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99450

Cc: 17.0 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
(cherry picked from commit e490b7812cae778c61004971d86dc8299b6cd240)