libiscsi: Call autoreconf to use buildroot's libtool

Use updated libtool from buildroot to fix MIPS64/n64 build problems
http://autobuild.humanoidz.org/results/a9a/a9aa506a591581e413dc38c53d0e56bec5970634/build-end.log

[Peter: add comment explaining why]
Acked-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libiscsi/libiscsi.mk

@@ -10,5 +10,7 @@ LIBISCSI_LICENSE         = GPLv2+ LGPLv2.1+
 LIBISCSI_LICENSE_FILES   = COPYING LICENCE-GPL-2.txt LICENCE-LGPL-2.1.txt
 LIBISCSI_INSTALL_STAGING = YES
 LIBISCSI_DEPENDENCIES    = popt
+# fixes MIPS64 link failure
+LIBISCSI_AUTORECONF      = YES
 
 $(eval $(autotools-package))