mtools: Convert to BBCLASSEXTEND

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

meta/packages/mtools/mtools-native_3.9.9.bb

@@ -1,7 +0,0 @@
-# mtools-native OE build file
-# Copyright (C) 2004-2006, Advanced Micro Devices, Inc.  All Rights Reserved
-# Released under the MIT license (see packages/COPYING)
-
-require mtools_${PV}.bb
-
-inherit autotools native

meta/packages/mtools/mtools_3.9.9.bb

@@ -18,3 +18,5 @@ S = "${WORKDIR}/mtools-${PV}"
 inherit autotools
 
 EXTRA_OECONF = "--without-x"
+
+BBCLASSEXTEND = "native"