kernel update to commit 3294754a177e0f6c05147a294a32987dd9c9a5c9

Signed-off-by: Alin Jerpelea <alin.jerpelea@sonymobile.com>
Set display density to 240

tianchi is a phablet and humans are not giants

Signed-off-by: Adam Farden <adam@farden.cz>
overlay: add overlay for weak vibrator

The vibrator is weak and often stops working. Sony knows
about this issue and sets these vibration patterns in the
tianchi factory image to compensate.

Signed-off-by: Adam Farden <adam@farden.cz>
lights: hack: account for tianchi's dim backlight

Signed-off-by: Adam Farden <adam@farden.cz>