kern: resolve NonSecure definition TODO

kern: correct thread termination atomicity

kern: fix reference leak in KThread::GetThreadFromId callers

kern: non-loop cas-weak -> cas-strong

kern: fix bug in KScheduler::ClearPreviousThread

kern: add stubbed KDevicePageTable implementation for systems without iommu

kern: move SetupPoolPartitionMemoryRegions into board specific implementation

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

kern: use std::atomic_ref instead of reinterpret_cast to std::atomic

kern: use common GIC implementation for arm/arm64

kern: correct flushing of init arguments

kern: simplify SetupForIpcClient cleanup

kern: SvcLegacyGetFutureThreadInfo

kern: rename CacheHelper operation for accuracy

kern: KPageTableBase::WriteDebugMemory stores/invalidates cache

kern: fix multicore instruction cache invalidation

kern: add tracing for irq/scheduling

kern: cleanup some KMemoryManager functions

kern: refactor KMemoryLayout

kern: N reduced the slabheap gap size in 10.0.0

kern: mark KThread/KProcess.GetId() final to save virtual calls

kern: fix missing scheduler updates in KLightLock/Exception, fix RequestScheduleOnInterrupt

kern: implement svc trace

kern: SvcChangeKernelTraceState

kern: remove stray log in SetHeapSize

kern: build with -Wextra

ams: avoid UB infinite loops

ams: update build system to add generic-fallback support

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: complete final SVC stubs (KernelDebug/Trace debug-impl still TODO)