radeonsi: don't invoke DCC decompression in update_all_texture_descriptors

radeonsi: don't invoke DCC decompression in update_all_texture_descriptors

This fixes a bug uncovered by the 17-part patch series, specifically:
  "gallium/radeon: merge dirty_fb_counter and dirty_tex_descriptor_counter"

If dirty_tex_counter has been updated and set_shader_image invokes DCC
decompression, the DCC decompression itself checks the counter and updates
descriptors, which in turn invokes the same DCC decompression. The blitter
can't handle the recursion and the driver eventually crashes.

Cc: 17.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>