intel/fs: Don't stomp f0.1 in SIMD16 ballot

In fragment shaders f0.1 is used for discards so doing ballot after a
discard can potentially cause the discard to not happen.  However, we
don't support SIMD32 fragment shaders yet so this isn't a problem.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Cc: mesa-stable@lists.freedesktop.org
1 file changed