turnip: add support for D32_SFLOAT_S8_UINT

Add support for D32_SFLOAT_S8_UINT, which requires special handling because
it is actually two images.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5537>
7 files changed