ABI FPR names (#767)

* Add o32 to disassembler and update macro.inc

* Add a variable for asm processor to makefile
and improve objdump flags

* Update diff settings

* git subrepo pull --force tools/asm-differ

subrepo:
  subdir:   "tools/asm-differ"
  merged:   "1236288d1"
upstream:
  origin:   "https://github.com/simonlindholm/asm-differ"
  branch:   "main"
  commit:   "1236288d1"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

* Remove * import and implement option

* Fix some stuff in the makefile

* Update asm-processor

* Review

* Fix old var name

diff_settings.py

@@ -5,4 +5,5 @@ def apply(config, args):
     config['myimg'] = 'mm.us.rev1.rom_uncompressed.z64'
     config['mapfile'] = 'build/mm.map'
     config['source_directories'] = ['./src','./include']
+    config['objdump_flags'] = ['-M','reg-names=32']
     config['makeflags'] = ['KEEP_MDEBUG=1']