libexo/sc7fw: support release/debug/audit

libexosphere: support building under debug/audit configurations

exo: reserve a portion of iram for secure monitor debug (including code)

boot: add rgltr/clkrst overrides, skel I2cBusAccessor

sdmmc: implement driver suitable for fs + bootloader ...

* sdmmc: begin skeletoning sdmmc driver

* sdmmc: add most of SdHostStandardController

* sdmmc: implement most of SdmmcController

* sdmmc: Sdmmc2Controller

* sdmmc: skeleton implementation of Sdmmc1Controller

* sdmmc: complete abstract logic for Sdmmc1 power controller

* sdmmc: implement gpio handling for sdmmc1-register-control

* sdmmc: implement pinmux handling for sdmmc1-register-control

* sdmmc: fix building for arm32 and in stratosphere context

* sdmmc: implement voltage enable/set for sdmmc1-register-control

* util: move T(V)SNPrintf from kernel to util

* sdmmc: implement BaseDeviceAccessor

* sdmmc: implement MmcDeviceAccessor

* sdmmc: implement clock reset controller for register api

* sdmmc: fix bug in WaitWhileCommandInhibit, add mmc accessors

* exo: add sdmmc test program

* sdmmc: fix speed mode extension, add CheckMmcConnection for debug

* sdmmc: add DeviceDetector, gpio: implement client api

* gpio: modernize client api instead of doing it the lazy way

* sdmmc: SdCardDeviceAccessor impl

* sdmmc: update test program to read first two sectors of sd card

* sdmmc: fix vref sel

* sdmmc: finish outward-facing api (untested)

* ams: changes for libvapours including tegra register defs

* sdmmc: remove hwinit

fusee: fix sleep/wake on 6.x

exo: build with -Wextra

ams: avoid UB infinite loops

ams: update build system to add generic-fallback support

exo: fixes, now tested working on mariko hardware

exo: add mariko spare reg write during setup

exo: implement mariko fuse driver

exo: implement remaining SE changes for mariko support

exo: implement mariko se/tzram context save

fusee/exo: correct device key management for newer consoles (closes #1053)

exo: amend pk21 restrictions

exo2: add security checks, full 2.0.0 support

exo2: address volca review commentary

exo2: implement warmboot firmware

exo2: implement SmcIramCopy/reboot to payload/rcm

exo2: implement SmcReencryptDeviceUniqueData

exo2: suspend fixes (sleep/wake now works on hardware)

exo2: implement the rest of cpu suspend (security checks TODO)

exo2: add sc7fw load, skeleton rest of suspend

exo2: implement the first half of SmcCpuSuspend

exo2: add a number of minor configuration fixes

exo2: implement smc cpu off

exo2: implement SmcPrepareEsDeviceUniqueKey, SmcPrepareEsCommonTitleKey, SmcLoadPreparedAesKey

exo2: Implement (untested) SmcDecryptDeviceUniqueData

exo2: implement some mariko TODOs