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.

fusee/fusee-secondary/src/nxfs.c

@@ -4,9 +4,9 @@
 #include <errno.h>
 #include <string.h>
 #include "nxfs.h"
+#include "mc.h"
 #include "gpt.h"
 #include "se.h"
-#include "hwinit.h"
 #include "utils.h"
 #include "sdmmc/sdmmc.h"