buildroot

initscripts: show status in S40network

The output of "/etc/init.d/S40network start/stop" was lacking a
newline due to the usage of printf. Fix it by echoing the status, like
we do in other init scripts.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>