[stage2] Fix some FS bugs

[exosphere] Fix bug in package2.c

Fix bug in fusee: package2.c, etc.

Fusee: Change package2 loading logic (untested)

Fusee: fix unused var

Fusee: Implement BIS crypto functions.

Fix out-of-bounds partition r/w bugs in raw_dev.c

GPT entry LBA range is inclusive

Fix latest commit

Fix BCT version parsing

Don't overflow devoptabs, etc.

Load the appropriate package1 key. The warmboot fw is now properly read.

Fix key derivation regression

[stage2] Add "hexdump"

Align crypto buffers to 16 bytes in key_derivation.c

Simplify some logic in derive_nx_keydata

Fix typo in decrypting all keyblobs (thanks @tslater2006 !)

Fusee: Fix typo when decrypting keyblobs.

Fusee: Decrypt all keyblobs during key derivation.

Simplify package1_get_encrypted_package1

Fix package1_read_and_parse_boot0 ...

Key derivation is now working

Fix TSEC key fetching, thanks to @rajkosto

Fix tsec.c (thanks @rajkosto @tslater2006), fixes #106

Fix diskio.c, etc.

Boot: Implement pinmux drive pad configuration

Remove stray debug printf in gpt.c

┬┴┬┴┤( ͡° ͜ʖ‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌├┬┴┬┴

Merge pull request #105 from encounter/stage2-logic ...

[stage2] Invert a few checks

[stage2] Invert a few checks

Fix typo in nxboot.c