cdns,zynq/zynqmp were recentle deprecated in Linux in favour of xlnx prefix. Add this new compatible string and retain the existing string for compatibility with uboot drivers. Signed-off-by: Harini Katakam <harini.katakam@amd.com> Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/a38b1b55132fc026cc09224dba61e42fd03b1a36.1661259558.git.michal.simek@amd.com