Add forgotten config files for 5.12 RC1

Fixes https://github.com/Frogging-Family/linux-tkg/issues/190

linux-tkg-config/5.12/90-cleanup.hook

@@ -0,0 +1,14 @@
+[Trigger]
+Type = File
+Operation = Install
+Operation = Upgrade
+Operation = Remove
+Target = usr/lib/modules/*/
+Target = !usr/lib/modules/*/?*
+
+[Action]
+Description = Cleaning up...
+When = PostTransaction
+Exec = /usr/share/libalpm/scripts/cleanup
+NeedsTargets
+ 

linux-tkg-config/5.12/cleanup

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+for _f in /usr/lib/modules/*tkg*; do
+  if [[ ! -e ${_f}/vmlinuz ]]; then
+    rm -rf "$_f"
+  fi
+done
+
+# vim:set ft=sh sw=2 et:
+