Bring pcbios, seabios, and vgabios into the tree as git submodules.  Right now,
they aren't integrated into the build but we can do that incrementally.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/configure b/configure
index 64a0391..b78341c 100755
--- a/configure
+++ b/configure
@@ -2405,10 +2405,12 @@
 # build tree in object directory if source path is different from current one
 if test "$source_path_used" = "yes" ; then
     DIRS="tests tests/cris slirp audio block pc-bios/optionrom"
+    DIRS="$DIRS roms/pcbios roms/seabios roms/vgabios"
     FILES="Makefile tests/Makefile"
     FILES="$FILES tests/cris/Makefile tests/cris/.gdbinit"
     FILES="$FILES tests/test-mmap.c"
     FILES="$FILES pc-bios/optionrom/Makefile pc-bios/keymaps pc-bios/video.x"
+    FILES="$FILES roms/pcbios/Makefile roms/seabios/Makefile roms/vgabios/Makefile"
     for bios_file in $source_path/pc-bios/*.bin $source_path/pc-bios/*.dtb $source_path/pc-bios/openbios-*; do
         FILES="$FILES pc-bios/`basename $bios_file`"
     done
@@ -2422,6 +2424,20 @@
     done
 fi
 
+# temporary config to build submodules
+for rom in seabios vgabios pcbios; do
+    config_mak=roms/$rom/config.mak
+    echo "# Automatically generated by configure - do not modify" >> $config_mak
+    echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
+    echo "CC=$cc" >> $config_mak
+    echo "BCC=bcc" >> $config_mak
+    echo "CPP=${cross_prefix}cpp" >> $config_mak
+    echo "OBJCOPY=objcopy" >> $config_mak
+    echo "IASL=iasl" >> $config_mak
+    echo "HOST_CC=$host_cc" >> $config_mak
+    echo "LD=$ld" >> $config_mak
+done
+
 for hwlib in 32 64; do
   d=libhw$hwlib
   mkdir -p $d