kern: fix KTrace buffer memory region type to match official kernel

kern: update Initialize0 to account for new ordering

kern: update KMemoryRegion to store last address rather than size

kern: set EL2 id registers on deprivilege

kern: improve KSynchronizationObject, kill KSynchronization

kern: Kill KCoreLocalRegion

kern: move scheduler/interrupt task manager out of core local region

kern: update KHardwareTimer, move out of KCoreLocalRegion

kern: use single interrupt manager object

kern: fix linear mapped dram -> pool partition check

kern: revamp KMemoryRegionType to better encode derivation hierarchies

kern: improve resource region size definitions/calculations

kern: use size instead of phys addr as sentinel value in InitializeCore linear mapping logic

kern: remove accidentally copypasted code

kern: make GetTargetFirmware a compile-time constant when not building for Switch

kern: correct flushing of init arguments

kern: refactor KMemoryLayout

kern: SvcChangeKernelTraceState

kern: build with -Wextra

kernel_ldr: use unoptimized memcpy before mmu bringup (closes #1102) ...

Before the MMU is up, all reads/writes must be aligned; the optimized
memcpy implementation does not guarantee all reads/writes it performs
are aligned.

This commit splits the libc impl to be separate for kernel/kernel_ldr,
and so now only kernel will use the optimized impl. This is safe,
as the MMU is brought up before kernel begins executing.

kern: fix dynamic calculation of slab heap size

kern: fix EL0 TLB conflict handler

kern: fix kscheduler interrupt api, adjust debug logging

kern: retrieve target firmware from exosphere instead of hardcoding

kern: patch svc tables via asm, instead of relying on compiler to be nice

Switch atmosphere's build target to C++20. (#952) ...

* ams: update to build with gcc10/c++20

* remove mno-outline-atomics

* ams: take care of most TODO C++20s

* fusee/sept: update for gcc10

* whoosh, your code now uses pre-compiled headers

* make: dependency fixes

ams: revamp target firmware

kern: implement KUnsafeMemory

kern: implement 10.x perm change, fix many page table bugs

kern: Update init to reflect 10.0.0 changes