setup_board: add wrapper for emaint

BUG=chromium:425739
TEST=`emaint-gizmo --fix binhost` regenerate the deleted Packages file
TEST=`PKGDIR=/tmp/pkgdir emaint-gizmo --fix binhost` regenerate the
Packages file in /tmp/pkgdir

Change-Id: If0a1d0f5242c1a1e0a4e853e570c927165c97c8b
Reviewed-on: https://chromium-review.googlesource.com/225483
Reviewed-by: David James <davidjames@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
diff --git a/setup_board b/setup_board
index 359cbd3..821ad65 100755
--- a/setup_board
+++ b/setup_board
@@ -129,7 +129,7 @@
 EOF
   wrappers+=( "${wrapper}" )
 
-  for wrapper in 'emerge --root-deps' ebuild eclean equery portageq \
+  for wrapper in 'emerge --root-deps' ebuild eclean emaint equery portageq \
                  qcheck qdepends qfile qlist qmerge qsize; do
     _generate_wrapper ${wrapper}
   done