release.sh: Don't run prep_release with fx_

The result of the printf statement is sorted, making
it do binaries first, which results in a lot of junk
files then being present inside the source archive.

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/release.sh

@@ -28,7 +28,9 @@ release()
 	remkdir "$vdir"
 	x_ git clone . "$relsrcdir"
 
-	fx_ prep_release printf "src\ntarball\nbin\n"
+	prep_release src
+	prep_release tarball
+	prep_release bin
 	x_ rm -Rf "$relsrcdir"
 
 	x_ mkdir -p "$reldir"