support f2fs casefolding formatting tool

Bug: 159672232
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Change-Id: Ia9dd5d63f03c2365b5d82a84ff93263424f116bb
diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index bdb786c..6673543 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -271,6 +271,7 @@
     required: [
         "mke2fs",
         "make_f2fs",
+        "make_f2fs_casefold",
     ],
     dist: {
         targets: [