This patch adds a new entry in the pci_device_id table that filters
by class code, in order to cause unlisted NVIDIA SATA controllers to
be probed.  In the probe function, we determine whether the device is
a SATA or IDE controller by checking the device's bars (NVIDIA SATA
controllers will always have 6 bars).  Bar5 I/O mapped vs. memory
mapped is now determined programmatically by looking at the resource
flags of the bar.
Signed-off-by: Andrew Chew <achew@nvidia.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>