Add and fix copyright notices for better GPL compliance (thanks @naehrwert and @CTCaer).

fusee: Disable AHB redirection when necessary. ...

fusee: Add 3.0.0/3.0.1/3.0.2 warmboot fix.

fusee: Complete re-write of the hardware initialization code: ...

- Updated code to match hekate's;
- Improved nxboot (now boots firmwares 2.x successfully);
- Temporarily disabled built-in boot system module support;
- Fixed multiple bugs.

Fix multiple issues reported by Coverity Scan

Fusee: Deployed new SDMMC driver in fusee-secondary. All stages boot now. ...

Fusee: Fixed wrong argument in se.c function.
Fusee: Improved timers.