fix(device-tree):Add UIO compatibility for AXI APP node

* This generate a UIO device for the APP area.
* UIO is accessible in /dev/axiapp

recipes-bsp/device-tree/files/damc-fmc2zup/pl-conf.dtsi

@@ -9,5 +9,9 @@
         reg = < 0xA0820000 0x20 >;
     };
 
+};
 
+&ins_bsp_fmc2zup_system_p_m_axi_app1 {
+    compatible = "generic-uio";
+    linux,uio-name = "axiapp";
 };