zmqpp: update license

Since version 4.1.2, zmqpp is provided under MPLv2.

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/zmqpp/zmqpp.mk

@@ -8,7 +8,7 @@ ZMQPP_VERSION = 4.1.2
 ZMQPP_SITE = $(call github,zeromq,zmqpp,$(ZMQPP_VERSION))
 ZMQPP_INSTALL_STAGING = YES
 ZMQPP_DEPENDENCIES = zeromq
-ZMQPP_LICENSE = MIT
+ZMQPP_LICENSE = MPLv2.0
 ZMQPP_LICENSE_FILES = LICENSE
 ZMQPP_MAKE_OPTS = LD="$(TARGET_CXX)" BUILD_PATH=./build PREFIX=/usr
 ZMQPP_LDFLAGS = $(TARGET_LDFLAGS) -lpthread