panvk: enable uniformAndStorageBuffer8BitAccess and storagePushConstant8

8-bit loads are already supported by bi_emit_load_ubo and
bi_emit_load_push_constant, so the only necessary changes were fixing
swizzle lowering issues uncovered by these CTS tests.

Signed-off-by: Benjamin Lee <benjamin.lee@collabora.com>
Reviewed-by: Eric R. Smith <eric.smith@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33416>
2 files changed