microblaze: Add FDT support This patch adds FDT (flattened device tree) support to microblaze arch. Tested with Linux arch/microblaze kernels with and without compiled in FDT on Xilinx ML506 board. Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>