v3d: Disable SSBOs and atomic counters on vertex shaders.

v3d: Disable SSBOs and atomic counters on vertex shaders.

The CTS fails on
dEQP-GLES31.functional.shaders.opaque_type_indexing.atomic_counter.*vertex
when they are enabled, due to the VS being run for both bin and render.  I
think this behavior is expected to be valid, but I can't find text in
atomic counters or SSBO specs saying so (the closed I found was in
shader_image_load_store).  Just disable it for now, since the closed
source driver doesn't expose vertex atomic counters/SSBOs either.