Enhancements: Utilize "event" bits on i2c devices

[vthakur7f]

Product: (OC-SDR, OC-LTE, OC-LTE, OC-Power, others)

OC-SDR

Component: (PSU, GBC, BBU, FEM, LED, ME)

GBC/FE/SDR

Category: (Hardware, Software/stack, Firmware/bootloader, Documentation)

Firmware/OCWare
Describe the solution you'd like
These devices provide a register that we can read to check whether or not the device is asserting this line and what the reason is.

For example, the SE98ATP provides the ESTAT bit in the configuration register and some bits in the temperatureregister to figure out the cause.

Devices to change:

• SE98ATP
• ADT7481
• INA226
• LTC4274 (we check multiple registers when 0x00 would tell us everything we need)

Is your feature request related to a problem? Please describe.
The code currently infers whether or not our temperature/current sensors are asserting the alert/event pin by reading their current value and comparing to the configured value. While this technically works, it's hacky and definitely isn't how the devices are intended to be used.