glsl: ir_explog_to_explog2 is no more

Since 63684a9a ("glsl: Combine many instruction lowering passes
into one.", Thu Nov 18 2010), we no longer have anything called
ir_explog_to_explog2. So it's only confusing to have those
references there.

Update with the appropriate method, so people can grep for it in
the current tree if they encounter it.

Signed-off-by: Erik Faye-Lund <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>

0 files changed, 0 insertions, 0 deletions