fix: point each Amiberry build pin at its repo

KNULLI builds amiberry from Batocera's package through its batocera
submodule: the reference now names knulli-linux at 20260511, the tag
platforms/knulli.yml is read at, and the package file below the
submodule. check_freshness follows a path .gitmodules declares to the
commit the tree pins, which reads AMIBERRY_VERSION = v7.1.0 there.

RetroBat pins amiberry 8.3.0.0 only in emulators/versions.xml on its
download server, read by emulatorLauncher/Installer.cs. No repository
holds it, so amiberry-8.3.0 keeps pin_frozen, which says so, and no
pin_build.

emulators/amiberry-7.1.1.yml

@@ -7,7 +7,7 @@ profiled_date: "2026-11-09"
 source_commit: "c53d6db770a5580732a7f2bb48abcbfcd95fd0f4"
 pin_frozen: "AmberELEC builds this revision (AmberELEC packages/games/emulators/amiberry/package.mk:6\
   \ at a21975b), KNULLI the v7.1.0 tag through its batocera submodule (batocera package/batocera/emulators/amiberry/amiberry.mk:7\
-  \ at 487014d). The two read the same files: equal ROM database, folders, scan and booter, the changes\
+  \ at 487014d, the commit knulli-linux 20260511 pins). The two read the same files: equal ROM database, folders, scan and booter, the changes\
   \ between them being hotkeys, the GUI font and the plugins folder."
 pin_build:
 - platform: amberelec
@@ -17,9 +17,9 @@ pin_build:
   variable: PKG_VERSION
   value: "c53d6db770a5580732a7f2bb48abcbfcd95fd0f4"
 - platform: knulli
-  repo: "https://github.com/batocera-linux/batocera.linux"
-  revision: "487014d91147610ebdd62f870009d4563ac61763"
-  path: "package/batocera/emulators/amiberry/amiberry.mk"
+  repo: "https://github.com/knulli-cfw/knulli-linux"
+  revision: "20260511"
+  path: "batocera/package/batocera/emulators/amiberry/amiberry.mk"
   variable: AMIBERRY_VERSION
   value: "v7.1.0"
 core_version: "7.1.1"

emulators/amiberry-8.3.0.yml

@@ -6,15 +6,9 @@ upstream: "https://github.com/tonioni/WinUAE"
 profiled_date: "2026-11-09"
 source_commit: "110ab1b08c010f8b1f873310add18cc66dae4f24"
 pin_frozen: "RetroBat, the only platform that ships it, installs the Windows build of the v8.3.0 tag\
-  \ (RetroBat emulators/versions.xml lists amiberry 8.3.0.0 on its stable channel, RetroBat emulatorLauncher/Installer.cs:26,\
-  \ 199-237 reads it). Later releases are not part of that install."
-pin_build:
-- platform: retrobat
-  repo: "https://www.retrobat.org/repo/win64"
-  revision: "stable"
-  path: "emulators/versions.xml"
-  variable: amiberry
-  value: "8.3.0.0"
+  \ (emulators/versions.xml on its download server lists amiberry 8.3.0.0 for the stable channel, which\
+  \ emulatorLauncher/Installer.cs:26, 199-237 reads). No repository holds that list. Later releases are not\
+  \ part of that install."
 core_version: "8.3.0"
 version_basis:
   kind: file