rt2560_eeprom_read
static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t);
val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0);
val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i);
val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i);
val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE);