bq4802_read
ctrl = bq4802_read(sc, BQ4802_CTRL);
ctrl = bq4802_read(sc, BQ4802_CTRL);
uint8_t bq4802_read(void *, uint8_t);
ctrl = bq4802_read(sc, BQ4802_CTRL); \
(*regs)[i] = bq4802_read(sc, i); \
ctrl = bq4802_read(sc, BQ4802_CTRL); \