init.c: we don't want the android container to use the hardware/system console

Change-Id: Ifb6d13f475c8e5b09c30a17c20e9392739fb53c6
Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
init.rc: Set serial console shell as root

Signed-off-by: Yen-Chin Lee <coldnew.tw@gmail.com>