usb: cdns3: Fix issue with using incorrect PCI device function

PCI based platform can have more than two PCI functions.
USBSS PCI Glue driver during initialization should
consider only DRD/HOST/DEVICE PCI functions and
all other should be ignored. This patch adds additional
condition which causes that only DRD and HOST/DEVICE
function will be accepted.

cc: <stable@vger.kernel.org>
Fixes: 7733f6c3 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20230308124427.311245-1-pawell@cadence.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>