ide: Add PCI subsystem ID to emulated devices.

ide: Add PCI subsystem ID to emulated devices.

Merge into qemu git of this change to hw/ide.c from xen-unstable:

    changeset:   13821:6e1b380947ee72e300ce038cbeade628f347ac6a
    user:        kfraser@localhost.localdomain
    date:        Wed Feb 07 16:08:47 2007 +0000
    files:       tools/ioemu/hw/cirrus_vga.c tools/ioemu/hw/ide.c tools/ioemu/hw/rtl8139.c
    description:
    hvm: Add PCI subsystem ID to emulated devices.

    This patch adds the PCI Subsystem ID 5853:0001 to the virtual
    devices emulated by qemu (ide, nic, vga).

    Signed-off-by: Gerd Hoffmann <kraxel@suse.de>