asahi: Upload at most the max texture state registers

The rest are bindless now.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24258>

src/gallium/drivers/asahi/agx_state.c

@@ -1980,7 +1980,7 @@ agx_build_pipeline(struct agx_batch *batch, struct agx_compiled_shader *cs,
    if (nr_textures) {
       agx_usc_pack(&b, TEXTURE, cfg) {
          cfg.start = 0;
-         cfg.count = nr_textures;
+         cfg.count = MIN2(nr_textures, AGX_NUM_TEXTURE_STATE_REGS);
          cfg.buffer = T_tex.gpu;
       }
    }