paho-mqtt-cpp: upgrade 1.5.3 -> 1.6.0

Changelog:
  https://github.com/eclipse-paho/paho.mqtt.cpp/releases/tag/v1.6.0

Changes:
- Bumped Paho C submodule to v1.3.16 and updated directory name to externals/paho.mqtt.c
- Some significant performance increases (lower latency) for connect and publish
- Fixed topic_matcher and topic_filter to properly match parent with multi-level ('#') wildcard.
- Slight optimization of topic_filter to do simple string comparison if the filter does not contain wildcards.
- Set a minimum version for Paho C in the CMake file. Report the version found.
- .deb version properly set, and add architecture name to .deb file
- remove const from connect_options_builder 'move' constructor
- fix potential deadlock in thread_queue on capacity increase.
- Incorrect default retain value in a will options constructor
- prevent undefined behaviour on empty topic matching
- Sync reconnect example crashes on first reconnect

Signed-off-by: Andrej Kozemcak <andrej.kozemcak@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta-oe/recipes-connectivity/paho-mqtt-cpp/paho-mqtt-cpp_1.5.3.bb b/meta-oe/recipes-connectivity/paho-mqtt-cpp/paho-mqtt-cpp_1.6.0.bb
index 5b4aed3001..53c1d5770b 100644
--- a/meta-oe/recipes-connectivity/paho-mqtt-cpp/paho-mqtt-cpp_1.5.3.bb
+++ b/meta-oe/recipes-connectivity/paho-mqtt-cpp/paho-mqtt-cpp_1.6.0.bb
@@ -11,7 +11,7 @@ LIC_FILES_CHKSUM = " \
 "
 
 SRC_URI = "git://github.com/eclipse/paho.mqtt.cpp;protocol=https;branch=master;tag=v${PV}"
-SRCREV = "17ff3dc0270738adc710667be44847eebc038ae0"
+SRCREV = "c0b43a49d7b7e7b5e7009658ca22f19ac1112c83"
 
 DEPENDS = "openssl paho-mqtt-c"