BPI-M3 fix rootmydevice issue for Security Alert

BPI-M3: fix rootmydevice issue

STEP 1. download update file & install STEP 2. update boot files

=======================STEP 1:==========================

on ubuntu / raspbian / debian :

download file: linux-bananapi-bpi-m3-kernel3_1.2.9_armhf.deb

github: https://github.com/BPI-SINOVOIP/BPI-files/raw/master/debs/linux-bananapi-bpi-m3-kernel3_1.2.9_armhf.deb

google drive: https://drive.google.com/file/d/0B_YnvHgh2rwjdHJ2T3d6b0xja0k/view?usp=sharing

MD5: aeb90ff97a536c2c31fccfedd6d1c164

# sudo dpkg -i linux-bananapi-bpi-m3-kernel3_1.2.9_armhf.deb

on other system :

download file: 3.4.39-BPI-M3-Kernel.tgz

google drive: https://drive.google.com/file/d/0B_YnvHgh2rwjMU01LTRyRXBpUHM/view?usp=sharing

MD5: aef73f35266e78957066dd5be2bab3b2

# sudo tar xvf 3.4.39-BPI-M3-Kernel.tgz -C /

=======================STEP 2:==========================

# sudo su
# ls -l /usr/lib/u-boot/bananapi/bpi-m3/linux/
total 5908
-rwxr-xr-x 1 root root   55408  4月 27 06:11 script.bin
-rwxr-xr-x 1 root root   55408  4月 30 05:01 script.bin.emmc
-rwxr-xr-x 1 root root   55408  2月 23 06:27 script.bin.otg
-rwxr-xr-x 1 root root   74463  4月 27 04:07 sys_config.fex
-rwxr-xr-x 1 root root   74529  4月 30 04:55 sys_config.fex.emmc
-rwxr-xr-x 1 root root    2254  5月  4 07:49 uEnv.txt
-rw-r--r-- 1 root root 5717352  5月  3 21:47 uImage

# mount /dev/mmcblk0p1 /boot
# cp -a /usr/lib/u-boot/bananapi/bpi-m3/linux/* /boot/bananapi/bpi-m3/linux
# bpi-bootsel /usr/lib/u-boot/bananapi/bpi-m3/BPI_M3_720P.img.gz
# reboot