seabios: update submodule to git snapshot

git shortlog
------------

Gerd Hoffmann (7):
      disable array bounds warning
      better kvm detection
      detect physical address space size
      move 64bit pci window to end of address space
      be less conservative with the 64bit pci io window
      qemu: log reservations in fw_cfg e820 table
      check for e820 conflict

José Martínez (1):
      Fix high memory zone initialization in CSM mode

Lukas Stockner via SeaBIOS (1):
      virtio-blk: Fix integer overflow for large max IO sizes

Mark Cave-Ayland (3):
      esp-scsi: flush FIFO before sending SCSI command
      esp-scsi: check for INTR_BS/INTR_FC instead of STAT_TC for command completion
      esp-scsi: handle non-DMA SCSI commands with no data phase

Niklas Cassel via SeaBIOS (1):
      ahci: handle TFES irq correctly

Tony Titus via SeaBIOS (1):
      Increase BUILD_MAX_E820 to 128

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