radeonsi: fix resource_copy_region with ETC formats (e.g. for Stoney)
Only Stoney, Vega10, Raven, and Raven2 support ETC.
Fixed tests:
dEQP-GLES31.functional.copy_image.mixed.viewclass_64_bits_mixed.r11_eac_rgba16i.texture2d_to_texture2d
dEQP-GLES31.functional.copy_image.mixed.viewclass_64_bits_mixed.r11_eac_rgba16ui.texture2d_to_texture2d
dEQP-GLES31.functional.copy_image.mixed.viewclass_64_bits_mixed.signed_r11_eac_rgba16i.texture2d_to_texture2d
dEQP-GLES31.functional.copy_image.mixed.viewclass_64_bits_mixed.signed_r11_eac_rgba16ui.texture2d_to_texture2d
Fixes:
cf1e562fdd7 - radeonsi: remove compressed and subsampled gfx copy from resource_copy_region
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6431
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16491>