radv: add shader BOs to the list at pipeline bind time

radv: add shader BOs to the list at pipeline bind time

Otherwise, the shader BOs are not added to the list on SI because
prefetching isn't supported. Calling radv_cs_add_buffer() in the
prefetch codepath was a bad idea.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105952
Fixes: 4ad7595f35 ("radv: rename radv_emit_prefetch() to radv_emit_prefetch_L2")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Tested-by: Turo Lamminen <turo@alternativegames.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>