remoteproc: xlnx: Disable unsupported features

AMD-Xilinx platform driver does not support iommu or recovery mechanism
yet. Disable both features in platform driver.

Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
Link: https://lore.kernel.org/r/20250716213048.2316424-2-tanmay.shah@amd.com


Fixes: 6b291e80 ("drivers: remoteproc: Add Xilinx r5 remoteproc driver")
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>