Updated INA226 driver

[bjackson312006]

Changes

• Added missing #endif to INA226.h
• Added #include <stdint.h> and #include <math.h> to INA226.h
• Fixed ina226_reset, ina226_read_manufacturer_id, and ina226_read_die_id params

Notes

These issues were preventing me from building Cerberus

Checklist

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Closes # (#152)

[jr1221]

Lgtm