kern: optimize userspace access asm to use cheaper instruction in io memory loops

kern: use different psr masks for 64 and 32-bit El0 threads

kern: increase stack parameter size by 0x10

kern: update scheduler for new switch count tracking logic

gpio: really not sure how this works before, lol

kern/pm: only steal 8 MB from applet. ...

WebApplet crashes on exit with 16 more MB stolen, apparently.

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "b7711b8fb"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "b7711b8fb"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

docs/ams: bump version to 1.4.1

romfs: thank you fire emblem, very cool (closes #2021)

sdmmc: fix wrong mode select for GcAsic(Fpga)Speed

sdmmc: fix missing call to GetSdStatus at non-uhsi mode

kern: fix unnecessarily strong load in aligned spinlock ...

Copy-paste error I didn't notice for two years, whoops

erpt: fix multiple issues with automatic report cleanup (thanks @yellows8) ...

* Setting retrieval was performed before the call that used the setting.
* Call to detect number of files passed incomplete path and was guaranteed to fail.
* Call to delete reports passed incomplete path and was guaranteed to do nothing.

kern: fix GetProcessId wrong result on invalid parameter

exo: fix MemoryArrange enum typo

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "b2232894f"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "b2232894f"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

ncm: update enums, refactor comparison operators

git subrepo push libraries ...

subrepo:
  subdir:   "libraries"
  merged:   "363fba0cf"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "363fba0cf"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

lr: new AOC commands use MapAlias for paths...

kern: update for new exception flag semantics

kern: use slab allocated KSessionRequest dynamic mappings

kern: implement Svc(Un)MapInsecureMemory

kern: move SecureAppletMemory/KPageBuffer heap into the ResourceRegion

kern: increase stack region size when thread resource limit is increased

kern: Implement new PageTable operations/PhysicalMemory reference semantics

kern: update for new device map semantics

kern: merge/simplify KInterruptEventTask into KInterruptEvent

kern: implement K(Secure)SystemResource

kern: update handle table init

os: update os namespace for 15.0.0, loader/ro: update to use csrng, spl: bump max sessions