Merge remote-tracking branch 'tinker_github/develop' into sbc/tinkerb…

…oard/asus/Debian-9.0

DSI : Fix the kernel panic when system enter suspend mode with DSI panel

NOTE: Fine tune the commit "Add the backlight control node in /sys/class/backlight/rpi_backlight/brightness"

Change-Id: I2a4e4814183048539be2f1c03046b53e845e5573
Reviewed-on: https://tp-biosrd-v02/gerrit/83831
Reviewed-by: Jamess Huang(黃以民) <Jamess_Huang@asus.com>
Tested-by: Jamess Huang(黃以民) <Jamess_Huang@asus.com>
(cherry picked from commit f4ccd11)
Reviewed-on: https://tp-biosrd-v02/gerrit/83856

Fix eMMC emergency reboot kernel will panic because NPE

Change-Id: I11459a3a6af0adae5d8fbfef2206198c36db534d
Reviewed-on: https://tp-biosrd-v02/gerrit/82823
Reviewed-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>
Tested-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>
(cherry picked from commit 976b702)
Reviewed-on: https://tp-biosrd-v02/gerrit/82824

Merge branch 'linux4.4-rk3288' into sbc/tinkerboard/asus/Debian-9.0

Change-Id: I16bd637ae0e862aa8f26b655caf269be6ff1d518