add sload_f2fs permission

Change-Id: Icfcf02a21dace99ab3f466de495db24a88127ad7
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>

private/file_contexts

@@ -180,6 +180,7 @@
 /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/sload_f2fs	--	u:object_r:e2fs_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