Add MAX17040 Fuel Gauge driver

The MAX17040 is a I2C interfaced Fuel Gauge systems for lithium-ion
batteries This patch adds support the MAX17040 Fuel Gauge

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>