Changed KERNEL_DEVICETREE variable (in machine conf file) to contain .dtb files instead of .dts files.
Changed U-Boot bootdelay from 5 seconds to 3 seconds.
Add CONFIG_DTC to defconfig file for 3.6.9 kernel (so that DTC builds during kernel compile).
3.10 Linux kernel image now booting with AT91SAM9G25 board.
Updated README with more detailed NAND flashing instructions.