If 'rc.debug' is not in kernel parameters, the functions script would
exit 1 which causes other init scripts that source it exit 1. This is
not what we want.
[YOCTO #7948]
(From OE-Core rev: 080a7fbd876274410107732f175037fcea4d53ca)
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
