Revert "sparc/PCI: Clip bridge windows to fit in upstream windows"

This reverts commit d63e2e1f.

David Ahern reported that d63e2e1f breaks booting on an 8-socket T5
sparc system.  He also verified that the system boots with d63e2e1f
reverted.  Yinghai has some fixes, but they need a little more polishing
than we can do before v4.0.

Link: http://lkml.kernel.org/r/5514391F.2030300@oracle.com	# report
Link: http://lkml.kernel.org/r/1427857069-6789-1-git-send-email-yinghai@kernel.org

 # patches
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v3.19+