Probing of the fitblk driver in some situations happens after the kernel
attempts to mount rootfs, which then fails.
Always use 'rootwait' when using fitblk for rootfs.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This new layout is only bootable with OpenWrt U-Boot. It reuses the
two crash partions and expands the ubi partion to the end of whole flash.
Do not use this layout with stock U-Boot!
Signed-off-by: Furong Xu <xfr@outlook.com>