arm64: zynqmp: Wire DP and DPDMA for dc1/dc4

Enable Display Port and Display Port DMA for zc1751 dc1 and dc4.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/dbbd212bcc587e835d6df2f91622f5baa124bff5.1623684253.git.michal.simek@xilinx.com