Comment 0 for bug 2049442

[ Impact ]

* This enables symbols for all device trees built for Xilinx products.
* Currently only device trees which have overlays applied have symbols enabled.
* Most Xilinx device trees are currently overlayed (thus have the symbols already included) so this should have minimal size impact.

[ Test Plan ]

* Xilinx will verify they can load the dtbo's for the FPGA during runtime

[ Where problems could occur ]

* There could be an unexpected impact on other FPGA runtime overlays that are already working.

[ Other Info ]
* Xilinx platforms apply dtbo's during runtime when loading FPGA firmware.