Fixes: in Debian packaging use a real changelog file if provided
Signed-off-by: Woody Suwalski <terraluna977@gmail.com>

--- a/scripts/package/mkdebian	2023-03-31 09:38:14.620023584 -0400
+++ b/scripts/package/mkdebian	2023-03-31 09:38:55.704050033 -0400
@@ -164,14 +164,18 @@ echo $debarch > debian/arch
 extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)"
 extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
 
-# Generate a simple changelog template
-cat <<EOF > debian/changelog
+if [ ! -s patches/changelog ]; then
+	# Generate a simple changelog template
+	cat <<EOF > debian/changelog
 $sourcename ($packageversion) $distribution; urgency=low
 
   * Custom built Linux kernel.
 
  -- $maintainer  $(date -R)
 EOF
+else
+	mv patches/changelog debian
+fi
 
 # Generate copyright file
 cat <<EOF > debian/copyright