sysmobts: Read supported bands from EEPROM
sysmobts: Read supported bands from EEPROM

...rather than assuming that any v2 hardware supports all bands.

geosphere/osmo-bts,telenoobie/osmo-bts,telenoobie/osmo-bts,osmocom/osmo-bts,telenoobie/osmo-bts,geosphere/osmo-bts,telenoobie/osmo-bts,osmocom/osmo-bts,geosphere/osmo-bts,geosphere/osmo-bts,osmocom/osmo-bts