Busybox's init enabled at build time collide with 'sysvinit' package.
This does not seem a problem when using RPM package manager, but using
IPK instead, the build is broken at image creation time:
Collected errors:
* check_data_file_clashes: Package sysvinit wants to install file <...>/rcS
But that file is already provided by package * busybox
https://jira.digi.com/browse/DEL-4573
Signed-off-by: Javier Viguera <javier.viguera@digi.com>