sensorhub: update to 4.4.2 drop (ML4)

Change-Id: I6f620bcefe93426e706cd542aa019a8acbfc9609
Squashed update of kernel from 3.4.71 to 3.4.72
Squashed update of kernel from 3.4.72 to 3.4.73

Conflicts:
	drivers/mmc/card/block.c
Squashed update of kernel from 3.4.73 to 3.4.74
Linux 3.4.75

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>