Add make all-with-custome-bootimg for test custom zImage

Need tools: http://forum.xda-developers.com/showthread.php?t=2319018

Solves the problem:
abootimg --create boot.img -f bootimg.cfg -k zImage -r initrd.img
reading config file bootimg.cfg
reading kernel from zImage
reading ramdisk from initrd.img
boot.img: updated is too big for the Boot Image (6612992 vs 6518784 bytes)

make[1]: *** [boot] Error 1