增加ota文件系统编译方法；（注意每次swupdate_make_recovery_img需要删除根目录和./lichee/linux下的.config和.config.old）

target/allwinner/v851s-fastboot_sl100_back/busybox-init-base-ota-files/etc/inittab

@@ -0,0 +1,39 @@
+# /etc/inittab
+#
+# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
+#
+# Note: BusyBox init doesn't support runlevels.  The runlevels field is
+# completely ignored by BusyBox init. If you want runlevels, use
+# sysvinit.
+#
+# Format for each entry: <id>:<runlevels>:<action>:<process>
+#
+# id        == tty to run on, or empty for /dev/console
+# runlevels == ignored
+# action    == one of sysinit, respawn, askfirst, wait, and once
+# process   == program to run
+
+# Startup the system
+::sysinit:/etc/preinit
+::sysinit:/bin/mount -t proc proc /proc
+::sysinit:/bin/mount -t tmpfs tmpfs /run
+::sysinit:/bin/mount -o remount,rw /
+::sysinit:/bin/mkdir -p /dev/pts
+::sysinit:/bin/mkdir -p /dev/shm
+::sysinit:/bin/mount -a
+::sysinit:/bin/hostname -F /etc/hostname
+# now run any rc scripts
+#::sysinit:/etc/init.d/rcS
+::sysinit:/etc/init.d/rcS boot
+
+# Put a getty on the serial port
+/dev/console::respawn:-/bin/sh
+#ttyS0::respawn:/sbin/getty -n -L ttyS0 115200 vt100 -n -l /bin/sh # GENERIC_SERIAL
+
+# Stuff to do for the 3-finger salute
+#::ctrlaltdel:/sbin/reboot
+
+# Stuff to do before rebooting
+::shutdown:/etc/init.d/rcK
+::shutdown:/sbin/swapoff -a
+::shutdown:/bin/umount -a -r