package/zyre: update license

The project switched to MPLv2.0:
https://github.com/zeromq/zyre/issues/327

Fixes
http://autobuild.buildroot.net/results/88f/88fa0b150ad83e42625666cbffdf95ee178015cb/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/zyre/zyre.mk

@@ -6,8 +6,8 @@
 
 ZYRE_VERSION = 1d949e4bf79b694ea883c325f5813e87ddc2a687
 ZYRE_SITE = $(call github,zeromq,zyre,$(ZYRE_VERSION))
-ZYRE_LICENSE = LGPLv3+
-ZYRE_LICENSE_FILES = COPYING COPYING.LESSER
+ZYRE_LICENSE = MPLv2.0
+ZYRE_LICENSE_FILES = LICENSE
 ZYRE_INSTALL_STAGING = YES
 ZYRE_DEPENDENCIES = czmq zeromq host-pkgconf
 ZYRE_AUTORECONF = YES