Fixes the warning caught by clang (why did gcc miss this one?)
../src/panfrost/bifrost/bifrost_compile.h:81:45: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
.lower_bitfield_extract_to_shifts = true,
Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12003>