[OE-core] autotools.bbclass: Allow dependency tracking option to be easily overridden

[Richard Purdie]

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
diff --git a/meta/classes/autotools.bbclass b/meta/classes/autotools.bbclass
index ff27842..a4ce851 100644
--- a/meta/classes/autotools.bbclass
+++ b/meta/classes/autotools.bbclass
@@ -64,8 +64,10 @@ CONFIGUREOPTS = " --build=${BUILD_SYS} \
 		  --infodir=${infodir} \
 		  --mandir=${mandir} \
 		  --disable-silent-rules \
-		  --disable-dependency-tracking \
+		  ${CONFIGUREOPT_DEPTRACK} \
 		  ${@append_libtool_sysroot(d)}"
+CONFIGUREOPT_DEPTRACK = "--disable-dependency-tracking"
+
 
 oe_runconf () {
 	if [ -x ${S}/configure ] ; then