arm/dts: hammerhead: Increase panel-on delay back to 120ms

20ms is so fast that the screen turns on before mdp generates an image, so for a moment you can see a black screen and then the lockscreen appears.
Fully-sync with CAF kk_3.5: phase 16 (mach-msm)

Signed-off-by: Sultanxda <sultanxda@gmail.com>
Fully-sync with CAF kk_3.5: phase 17

Signed-off-by: Sultanxda <sultanxda@gmail.com>
Sultan_defconfig: Refresh