Updated Jetson Board Name Detection

NVidia Jetson board name detection has been updated thanks to @bibekbasu

Added Odroid N2 Detection

Odroid N2 Detection added as needed for Blinka. Thanks @paulcrawford.

Fixed Jetson Nano Detection

Issue with Jetson Nano sometimes returning nano and sometimes Nano has been resolved. Thanks @adriendod

Added missing CM3 Revision

This should allow a different variation of the CM3 Module to work.

Added RPi Compute Module Detection

Added initial Compute Module detection, plus added CM3+ Rev code.

Added support for Sifive's HiFive Unleashed

Added support for Sifive's HiFive Unleashed for Blinka

1GB, 2GB, and 4GB models of Raspberry Pi 4 Supported

Previously only the 4GB model was being detected, but now 1GB, 2GB, and 4GB models of Raspberry Pi 4 detected.

Added Raspberry Pi 4B

As needed for Blinka

Updated 96boards detection to be more specific

Since we're only adding DragonBoard 410c support at the moment, that is now the only board returned.

Fixed issue with FileNotFound error on some devices

This should resolve a FileNotFound error that was occurring on some devices as the result of a previous merge.