dt-bindings: PCI: xilinx-cpm: Add compatible string for CPM5 host1

The Xilinx Versal premium series has CPM5 block which supports two typeA
Root Port controller functionality at Gen5 speed.

Add compatible string to distinguish between two CPM5 rootport controller1.
since Legacy and error interrupt register and bits for both the controllers
are at different offsets.

Link: https://lore.kernel.org/r/20240922061318.2653503-2-thippesw@amd.com


Signed-off-by: Thippeswamy Havalige <thippesw@amd.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>