The installation process on nand-based boards using ubi
like the BTHOMEHUBV2B makes use of a ramdisk image, so it
makes sense to generate this by default.
Signed-off-by: Ben Mulvihill <ben.mulvihill@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42920 3c298f89-4303-0410-b956-a3cf2f4a3e73