seabios: update to pre-1.13 snapshot (with ahci fix included).

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Merge remote-tracking branch 'remotes/kraxel/tags/seabios-20191113-pull-request' into staging

seabios: update to pre-1.13 snapshot (with ahci fix included).

# gpg: Signature made Wed 13 Nov 2019 14:03:25 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/seabios-20191113-pull-request:
  seabios: update to pre-1.13 snapshot

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

roms/Makefile

@@ -1,5 +1,5 @@
 
-vgabios_variants := stdvga cirrus vmware qxl isavga virtio bochs-display ramfb
+vgabios_variants := stdvga cirrus vmware qxl isavga virtio bochs-display ramfb ati
 vgabios_targets  := $(subst -isavga,,$(patsubst %,vgabios-%.bin,$(vgabios_variants)))
 pxerom_variants  := e1000 e1000e eepro100 ne2k_pci pcnet rtl8139 virtio vmxnet3
 pxerom_targets   := 8086100e 808610d3 80861209 10500940 10222000 10ec8139 1af41000 15ad07b0

roms/seabios

@@ -1 +1 @@
-Subproject commit a5cab58e9a3fb6e168aba919c5669bea406573b4
+Subproject commit 3bdd2b77656124e3fa7693fbfd7a06f74c38eb87