rockchip: rock-pi-n10: Enable PCI/NVME

Enable PCI/NVME for M.2 Slot on RockPI-4 boards.

=> nvme info
Device 0: Vendor: 0x144d Rev: 4L1QCXB7 Prod: S35FNX0J623292
            Type: Hard Disk
            Capacity: 122104.3 MB = 119.2 GB (250069680 x 512)

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>