PCI config include

Split PCI config options into a separate file

Signed-off-by: Paul Brook <paul@codesourcery.com>
diff --git a/default-configs/m68k-softmmu.mak b/default-configs/m68k-softmmu.mak
index 69ca3ed..3e2ec37 100644
--- a/default-configs/m68k-softmmu.mak
+++ b/default-configs/m68k-softmmu.mak
@@ -1,5 +1,5 @@
 # Default configuration for m68k-softmmu
 
+include pci.mak
 CONFIG_GDBSTUB_XML=y
 CONFIG_PTIMER=y
-CONFIG_VIRTIO_PCI=y