Code review comment for lp:~milo/linaro-ci/bug1064686

'make ARCH=arm O=$pkg_dir KERNELVERSION="$kernel_version" KERNELRELEASE="$kernel_version" CROSS_COMPILE="$TOOLCHAIN_PREFIX" dtbs' should be perfomed *before* creating the package with 'make ... deb-pkg'. In the current implementation the dtb is created, but is not included into the linux-image deb as it should.