ubox: update to the latest version, fixes syslog issues

7a49632 logd: use uloop instead of ustream_fd for syslog
69d6542 logd: only create pipe in stream mode
df30c8c logread: terminate after EOF
bdcacad logd: implement oneshot mode for stream log read
4a10d4e logread: use oneshot mode without -f, wait for logd to close
ea3d7fa logd: enforce line length limit for ubus based log messages as well
960a29d logread: remove leftover debug code
a081904 logread: fix line buffer size
2c0d9cf logd: move stripping of newlines to log_add()

Signed-off-by: Felix Fietkau <nbd@nbd.name>

package/system/ubox/Makefile

@@ -5,9 +5,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(LEDE_GIT)/project/ubox.git
-PKG_SOURCE_DATE:=2017-10-06
+PKG_SOURCE_DATE:=2017-11-06
-PKG_SOURCE_VERSION:=da5b8b4049d35cab2f5484940d122017228598fd
+PKG_SOURCE_VERSION:=2c0d9cfe05e9712d44622c6bb4558e97359bfb76
-PKG_MIRROR_HASH:=b3feb557bcbe25d91a6a887e80df68aa2cb9124c6ff83051886ded86d27ab074
+PKG_MIRROR_HASH:=e545a29959a310fd7243ee2e799bf9f759894ea4e872010a781c3a65290377b6
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0