The module param pcie_p2p should be checked for kfd p2p feature, so add it.

Fixes: 75f0efbc ("drm/amdgpu: Take IOMMU remapping into account for p2p checks")
Signed-off-by: Bob Zhou <bob.zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>