dim: Autoadd new fixup patches

This fixes

commit 8ea00c70
Author: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Date:   Thu Dec 7 11:42:28 2017 +0200

    dim: Move to more readable fixup patch naming scheme

Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

dim

@@ -556,6 +556,7 @@ function commit_rerere_cache
 		return 1
 	fi
 	git add ./*.patch >& /dev/null || true
+	git add fixups/*.patch >& /dev/null || true
 	for file  in $(git ls-files -- rr-cache); do
 		if ! git log --since="60 days ago" --name-only -- $file | grep $file &> /dev/null; then
 			git rm $file &> /dev/null || true