[Stock] Add cleaner stock

[Stock]
fss0={sd path}
stock=1

Can now work for both older and new HOS versions.

- <= 6.2.0 loads nothing and removes kernel patching.
- >= 7.0.0 loads exo, wb and removes kernel patching.

This requires that fss0 {sd path} is valid. Otherwise it will fail on ini cfg parsing.

If <= 6.2.0 and no FSS0
[Stock]
stock=1

will provide a cleaner stock with no kernel patching.

bootloader/hos/secmon_exo.h

@@ -19,6 +19,6 @@
 
 #include "../utils/types.h"
 
-void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1);
+void config_exosphere(const char *id, u32 kb, void *warmboot, void *pkg1, bool stock);
 
 #endif