panfrost: gen_pack: Fix __gen_unpack_uint()

The mask should be a 64-bit value and we should promote cl bytes to u64
before shifting them.

Fixes: 75cc5b8c2922 ("panfrost: Adopt gen_pack_header.py via v3d")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6797>
1 file changed