Fix typo in nxboot.c

Write more code for stratosphere_get_ini1, make it and its caller take target_firmware

Embed exosphere, thermosphere, loader, pm, sm into fusee-secondary ...

Still needs boot and boot2 to be built as proper KIPs

Make loadlist empty when booting Horizon, more nxboot.c code

Write all the needed pk1 code and a large part of the nxboot function

Redesign fs_dev, raw_dev, introducing device_partition and switch_fs. ...

In theory, one could mount an encrypted FAT partition itself coming from a disk image, etc.

[stage2] Refactor key_derivation type and function declarations

Add code to register rawnand, boot0, and bcpkg2

Rewrite package2.c

[stage2] Remove printk, introduce UTF-8 console stdio

Merge SD stuff into fusee-secondary. Switch diskio to single-sector reads temporarily

Skeleton out framework for patching package2.

Fusee Stage2: skeleton more of the nxboot process

Add skeleton architecture for displaying custom splash screen

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