ubifs: allow encryption ioctls in compat mode

The ubifs encryption ioctls did not work when called by a 32-bit program
on a 64-bit kernel.  Since 'struct fscrypt_policy' is not affected by
the word size, ubifs just needs to allow these ioctls through, like what
ext4 and f2fs do.
Signed-off-by: NEric Biggers <ebiggers@google.com>
Signed-off-by: NRichard Weinberger <richard@nod.at>

fs/ubifs/ioctl.c

@@ -217,6 +217,9 @@ long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case FS_IOC32_SETFLAGS:
 		cmd = FS_IOC_SETFLAGS;
 		break;
+	case FS_IOC_SET_ENCRYPTION_POLICY:
+	case FS_IOC_GET_ENCRYPTION_POLICY:
+		break;
 	default:
 		return -ENOIOCTLCMD;
 	}