9e41c42ed4
It is really small, and used just twice, so we just call qpu_magic.
We also update how it is used:
* QFILE_NULL is an undef so we can just load anything. Previously we
were using accumulator 0, but there isn't any real reason to use
an accumulator for this. Using reg 0.
* QFILE_LOAD_IMM: it seems that we don't use at all right now, so
let's add an assert
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13008>