PCI: pci_ids: add device ids for STA2X11 device (aka ConneXT)

The chip is an I/O hub used by some Atom boards.  Most of those
symbols are used in arch/x86/platform/sta2x11/sta2x11.c (to be
introduced) and in the specific drivers as well.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>