package/rng-tools: needs autoreconf

Commit b6606937d861cc4de60e40baec1cb6cdb61b2aab wrongly removed
RNG_TOOLS_AUTORECONF=YES

Fixes:
 - http://autobuild.buildroot.org/results/a0a4631cc0252579b675a0c401a99239d0b97392

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Reviewed-by: Matt Weber <matt@thewebers.ws>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/rng-tools/rng-tools.mk

@@ -9,6 +9,8 @@ RNG_TOOLS_SITE = $(call github,nhorman,$(RNG_TOOLS_NAME),v$(RNG_TOOLS_VERSION))
 RNG_TOOLS_LICENSE = GPL-2.0
 RNG_TOOLS_LICENSE_FILES = COPYING
 RNG_TOOLS_DEPENDENCIES = libsysfs jitterentropy-library host-pkgconf
+# From git
+RNG_TOOLS_AUTORECONF = YES
 
 RNG_TOOLS_CONF_OPTS = \
 	--without-nistbeacon \