linux57/58-tkg: Introduce the misc-additions patch and move tty device option from base to it.

That specific patchset breaks packaging on Ubuntu.
https://github.com/Frogging-Family/linux-tkg/pull/26

Also temporarily add Alessio Bonfiglio's patch to restore Killer Wireless-AC 1550i support on 5.7.
https://bugzilla.kernel.org/show_bug.cgi?id=208141#c21

linux57-tkg/linux57-tkg-config/prepare

@@ -28,6 +28,11 @@ _tkg_srcprep() {
   msg2 "Applying glitched base patch"
   patch -Np1 -i ../0003-glitched-base.patch
 
+  if [ "$_misc_adds" = "true" ]; then
+    msg2 "Applying misc additions patch"
+    patch -Np1 -i ../0012-misc-additions.patch
+  fi
+
   if [ "${_cpusched}" == "MuQSS" ]; then
     # MuQSS
     patch -Np1 -i ../0004-5.7-ck1.patch