pinmux: add a build time option to configure JC rail uart

fs: DisableAutoSaveDataCreation was removed in 22

svc: bump supported kernel version

kern: write thread handle to tls +0x110 on creation

fusee/exo/ams: update with new keydata/version enums

erpt: style fix

erpt: add new IDs for 22.0.0

libvapours: add R_DISCARD macro

libstrat: update GetDebugEvent svc shim for compatibility with libnx changes

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "9a8703e71"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "9a8703e71"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

ams/emummc: update for 21.2.0

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "6cc765fca"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "6cc765fca"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

ams: add enum recognition for 21.1.0

kern: eshop actually requires an extra mb

kern: fix comparison typo

kern: 21.0.0 requires an even smaller memory pool...

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "6e2c09c79"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "6e2c09c79"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

loader: update for 20.0.0/21.0.0

pgl/pm: add GetProcessId command

kern: fix debug build for [[nodiscard]] changes

kern: fix whoops introduced by nodiscard refactor

erpt: implement new 21.0.0 commands

erpt: fix ids, failed to copy the new categories

fatal: add new HashedTraceContext command

erpt: add new IDs for 21.0.0

kern: exception flags are now atomic. ...

This is a really weird one, because they didn't actually update the
code which updates these flags in asm, these still use ldrb/orr/strb.
But every access to these via c++ is now an atomic ldxrb/stxrb loop.
Maybe they just forgot to update the asm?

kern: pass u32 directly to CopyMemoryToUserSize32Bit

ams: mark ams::Result [[nodiscard]] (partially complete). ...

NOTE: This work is not yet fully complete; kernel is done, but
it was taking an exceedingly long time to get through libstratosphere.
Thus, I've temporarily added -Wno-error=unused-result for libstratosphere/stratosphere.

All warnings should be fixed to do the same thing Nintendo does as relevant, but this
is taking a phenomenally long time and is not actually the most important work to do,
so it can be put off for some time to prioritize other tasks for 21.0.0 support.

kern: Nintendo now also devirtualizes KAutoObject::DynamicCast

kern: write cpu tick differential to tls +0x108 on thread switch