misc: pci_endpoint_test: Add Device ID for RZ/G2E PCIe controller

Add Renesas R8A774C0 in pci_device_id table so that pci-epf-test can be
used for testing PCIe EP on RZ/G2E.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1589493809-2602-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com


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