Buildroot Default Configuration Working

Buildroot Default Configuration Working on Zedboard:
Files generated as:
	- output/images/u-boot --> u-boot.elf to be included in boot.bin
	- output/images/rootfs.cpio.uboot --> rename to
uramdisk.image.gz
	- output/images/zynq-zed.dtb --> rename to devicetree.dtb