Normalish, the soloution is to do a few sharp stops from as high a speed as safe ...
That's the answer...I find braking from 80-100 MPH down to approx 10-20 MPH (but not coming to a stop), with about 90% braking effort (hard, but not enough to trigger the ABS), then give 2-3 minutes to let the brakes cool off, repeat the procedure 2-3 times more...then drive round trying not to use the brakes much for the next 10-15 minutes will give the brake discs good coating of brake pad, which should stop any squealing.
I use this method for bedding in any new car or new brakes...and don't suffer from squealing so long as the pads aren't silly hard track pads.