docker-engine: bump version to v1.12.5

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/docker-engine/docker-engine.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 cf4f876593abde06b4c19f971163a853a21b1992d75bd2fe5d8bea9015b09f87  docker-engine-v1.12.3.tar.gz
+sha256 81b337368efafb631a75f6ad5469413fd5828ce672592c374adf894dc05abd38  docker-engine-v1.12.5.tar.gz

package/docker-engine/docker-engine.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-DOCKER_ENGINE_VERSION = v1.12.3
+DOCKER_ENGINE_VERSION = v1.12.5
 DOCKER_ENGINE_SITE = $(call github,docker,docker,$(DOCKER_ENGINE_VERSION))
 
 DOCKER_ENGINE_LICENSE = Apache-2.0