panfrost: Relax image check
Shader images on Valhall don't allow nonzero "Minimum level". However, pan_texture lowers away nonzero minimum levels anyway, so there's nothing to check. Fixes:
KHR-GLES31.core.shader_image_load_store.advanced-allMips-cs
Signed-off-by: Alyssa Rosenzweig alyssa@collabora.com