make_f2fs: grant rw to vold

This allows to format sdcard for adoptable storage.

Bug: 69641635
Change-Id: I8d471be657e2e8f4df56c94437239510ca65096e
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>

private/file_contexts

@@ -179,7 +179,7 @@
 /system/bin/mke2fs		u:object_r:e2fs_exec:s0
 /system/bin/e2fsck	--	u:object_r:fsck_exec:s0
 /system/bin/fsck\.f2fs	--	u:object_r:fsck_exec:s0
-/system/bin/make_f2fs	--	u:object_r:fsck_exec:s0
+/system/bin/make_f2fs	--	u:object_r:e2fs_exec:s0
 /system/bin/fsck_msdos	--	u:object_r:fsck_exec:s0
 /system/bin/tune2fs	--	u:object_r:fsck_exec:s0
 /system/bin/toolbox	--	u:object_r:toolbox_exec:s0