Stratosphere: Add support for custom KIPs/INI in Fusee

Fusee Stage 2: Flesh out Package2 patching (implement decryption, fixing of metadata)

Skeleton out framework for patching package2.

Fusee Stage2: skeleton more of the nxboot process

Add skeleton architecture for displaying custom splash screen

Restore incorrectly deleted files

Fusee Stage 2: Make references to external (stage 1) memory internal.

Fusee stage 2: Fix up loader (no stage 3!). Skeleton chainload behavior.

Remove stage3 refs from Makefile

Turns out we actually don't need a third stage for Fusee

Update argument passing, add video resume

Implement much of the core Stage2 loader logic for Fusee

Use argc/argv in Stage 2

Add display/printk to fusee stage2

Fix start.s in stage2 of Fusee for argc/argv

Add debugging prints, enable backlight for stage1

Implement all core Stage 1 logic for Fusee

Change fusee folder naming

Sketch out more of fusee

SDMMC: Adding register definitions and draft files

fusee: fix critical rendering bug

fusee: jeez, srsly, kate, include all the files when you commit

fusee: commit a straggler for flicker removal

fusee: don't flicker as we turn the display on ...

Defers backlight init until the framebuffer's fully set up.

Implement BIS Key derivation.

Fix XTS implementation, now verified working on HW.

Prevent compiler optimization of SE LL writes

Implement NX Key Derivation.

fusee: add basic print-to-display console / printk

Implement SE XTS driver code for fusee