RVC2 FW:

- FW internal ddrinit header: don't reset watchdog if configured (support for XLink#99)
- IMX678 image quality improvements, + fixes for Camera node
- OAK-D-SR-PoE with IMX378 support
- OAK-T R8 support
- BNO IMU: fix timestamp jump
- fix some cases of device becoming offline in pipelines with IMU

XLink:
 luxonis/XLink#95 - [RVC2] Attempt to fix device bad state (USB/UNBOOTED)
 luxonis/XLink#99 - usb_boot: enable watchdog prior to booting

Author: alex-luxonis