Add OpenHack'Ware submodule

This replaces the ohw.diff file on top of v0.4.1.
Signed-off-by: NAndreas Färber <andreas.faerber@web.de>

.gitmodules

@@ -13,6 +13,9 @@
 [submodule "roms/openbios"]
 	path = roms/openbios
 	url = git://git.qemu-project.org/openbios.git
+[submodule "roms/openhackware"]
+	path = roms/openhackware
+	url = git://git.qemu-project.org/openhackware.git
 [submodule "roms/qemu-palcode"]
 	path = roms/qemu-palcode
 	url = git://github.com/rth7680/qemu-palcode.git

pc-bios/README

@@ -5,7 +5,7 @@
   project (http://www.nongnu.org/vgabios/).
 
 - The PowerPC Open Hack'Ware Open Firmware Compatible BIOS is
-  available at http://perso.magic.fr/l_indien/OpenHackWare/index.htm.
+  available at http://repo.or.cz/w/openhackware.git.
 
 - OpenBIOS (http://www.openbios.org/) is a free (GPL v2) portable
   firmware implementation. The goal is to implement a 100% IEEE

openhackware @ 4be9d6e4

+Subproject commit 4be9d6e46808336623188417aa0f21d9d34b208a