zeromq: bump version to 2.2.0

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/zeromq/zeromq.mk

@@ -4,7 +4,7 @@
 #
 #############################################################
 
-ZEROMQ_VERSION = 2.1.11
+ZEROMQ_VERSION = 2.2.0
 ZEROMQ_SITE = http://download.zeromq.org/
 ZEROMQ_INSTALL_STAGING = YES
 ZEROMQ_DEPENDENCIES = util-linux