update seabios to 1.11.1

git shortlog rel-1.11.0..rel-1.11.1
===================================

Kevin O'Connor (3):
      build: Use git describe --always
      shadow: Don't invoke a shutdown on reboot unless in a reboot loop
      paravirt: Only enable sercon in NOGRAPHIC mode if no other console specified

Marcel Apfelbaum (1):
      pci: fix 'io hints' capability for RedHat PCI bridges

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

seabios @ 0551a4be

-Subproject commit 63451fca13c75870e1703eb3e20584d91179aebc
+Subproject commit 0551a4be2ce599fb60e478b4c15e06ab6587822c