Add and fix copyright notices for better GPL compliance (thanks @naehrwert and @CTCaer).

exo: tabs->spaces...

exosphere: commit WIP warmboot progress ...

-15+ bugs fixed
-We now receive ~0x400 SMCs from user processes
 (including from psm) on wake-from-sleep

Exosphere: Change physical segment maps depending on firmware version

Exosphere: Fix extremely spooky Security Engine bugs, now makes it to the end of package2loader.

Exosphere: Fix remaining crt0 bugs, we now make it to pk2ldr.

Exosphere: Fix bug, we now make it past MMU enable.

Exosphere: Copy initial data image to DRAM for coldboot init.

Exosphere: Fix relocation bug (warmboot relocs currently broken in edge case)

[exosphere] Rewrite crt0/init and ld script

Exosphere: Fix crt0 bug resulting in bad relocation calculations

Integrate 5.x SMC API changes, add 4.x specific setup, implement target firmware selection

Add spsr_el3 to cpu_context

Add most of warmboot_main

Finish writing warmboot _crt0_

Fix bugs required to successfully hand off to kernel

Use the boot critical section

Fix section alignment, attempt to clean up the crt0 a bit

Fix start.s to pass reloc_list properly to package2ldr

Fix coldboot init, Exosphere makes it to PK2LDR in this commit.

Rewrite relocation stuff

Fix wrong subsection name

Implements missings parts of pk2ldr, refactor relocation a bit

Use bic instead of and in finalize_powerdown

Fix wrongly named register in __set_memory_registers, add prototype

Implement __set_memory_registers

Use specs file, remove -nostartfiles

Use provided __libc_init_array and __libc_fini_array, bugfixes

Add proper linkscript... ...

...adapted from @fincs' own linkscripts

Move source files to src/, add Makefile, fix all build and linkage errors, etc.