smb138x: introduce support for smb1355

Smb1355 is a derivative chip of smb1381, where features like
input current control and the tadc have been removed. Smb1355
can only be used in parallel mode and that too in mid-mid
configuration.

Note that even if smb1355 doesn't have an adc, its die temperature
could be measured by an external adc. So keep the support for
charger_temp and charger_temp_max properties.

Also smb1355's aux therm input will likely be connected to the
connector thermistor. Support connector_temp_health property.

Change-Id: I738d60ea3385c296187a9cc8afe8134feb8c615f
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>