seabios: update to 1.8.0 release

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Merge remote-tracking branch 'remotes/kraxel/tags/pull-roms-20150219-1' into staging

seabios: update to 1.8.0 release

# gpg: Signature made Thu Feb 19 08:36:30 2015 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-roms-20150219-1:
  seabios: update to 1.8.0 release

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

roms/config.seabios-128k

@@ -5,3 +5,4 @@ CONFIG_ROM_SIZE=128
 CONFIG_XEN=n
 CONFIG_USB_XHCI=n
 CONFIG_USB_UAS=n
+CONFIG_SDCARD=n

roms/seabios

@@ -1 +1 @@
-Subproject commit 8936dbb2cd5403c9a8279c849f7f4b0ccc0796ac
+Subproject commit 4c59f5d83044df4d57b90958b0fdfcecb913fddb