busybox: Add shell arithmetic to work with poky-tiny
Fix error when trying to boot core-image-tiny-initramfs:
/init: line 144: syntax error: support for $((arith)) is disabled
Kernel panic - not syncing: Attempted to kill init!
[YOCTO #14702]
(From meta-yocto rev: 50ac1fcadb07fdbeb4169cdd7a0c4a805a0f8588)
Signed-off-by: Alejandro Enedino Hernandez Samaniego <alhe@linux.microsoft.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Alejandro Hernandez Samaniego