drivers: power: supply: Add smb358 charger driver

Change adds smb358 charger driver. This code snapshot is taken
as of msm-3.18 'commit 4c9e6093fcfd ("netlabel: check for
IPV4MASK in addrinfo_get")'.

Update the driver changes to support extcon framework
and other USB interaction as per 4.14 kernel.

Remove qpnp-adc, adc_tm parameters and jeita parameters
and replace with iio-channels to read batt-id and vbat.

Change-Id: Ic101d69802c2d54a4cb78a10374acb6e3bf8c7dc
Signed-off-by: Savitri Balagani <savitri@codeaurora.org>
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>