intel/brw: Fix DEBUG_OPTIMIZER
What does this MR do and why?
intel/brw: Fix DEBUG_OPTIMIZER
Due to recent regression, adding INTEL_DEBUG=optimizer is dumping
shader optimization pass details to console rather than to respective
files.
Thank you, Kenneth W Graunke for helping me figure this out.
Fixes: 17b7e490890b ("intel/brw: Move out of fs_visitor and rename print instructions")
Signed-off-by: Sushma Venkatesh Reddy <sushma.venkatesh.reddy@intel.com>