update STK3X1X driver

Signed-off-by: Alin Jerpelea <alin.jerpelea@sonymobile.com>
add MMC3416xPJ magnetic sensor driver

Signed-off-by: Alin Jerpelea <alin.jerpelea@sonymobile.com>
add KIONIX accelerometer driver

Signed-off-by: Alin Jerpelea <alin.jerpelea@sonymobile.com>
add CYPRESS CYTTSP4 Touchscreen driver

Signed-off-by: Alin Jerpelea <alin.jerpelea@sonymobile.com>
add sensors to IIO framework

add:
Yamaha YAS532 3-Axis Magnetometer
Bosch BMA250E 3-Axis Accelerometer
Kionix KXTJ2 3-Axis Accelerometer

Signed-off-by: Alin Jerpelea <alin.jerpelea@sonymobile.com>