Bump buidlroot version to 2018.02.6

bsp/buildroot/package/freerdp/0001-Fix-gstreamer-1.0-detection.patch

@@ -0,0 +1,28 @@
+From 368989526c32cdf9d680a397fede3cb773fa2609 Mon Sep 17 00:00:00 2001
+From: Mike Gilbert <floppym@gentoo.org>
+Date: Fri, 28 Jul 2017 16:31:41 -0400
+Subject: [PATCH 1/1] Fix gstreamer-1.0 detection
+
+[yann.morin.1998@free.fr: backport from upstream]
+Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+
+---
+ cmake/FindGStreamer_1_0.cmake | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cmake/FindGStreamer_1_0.cmake b/cmake/FindGStreamer_1_0.cmake
+index 3aa8fc6dc..6fbc0ecc5 100644
+--- a/cmake/FindGStreamer_1_0.cmake
++++ b/cmake/FindGStreamer_1_0.cmake
+@@ -59,7 +59,7 @@ macro(FIND_GSTREAMER_COMPONENT _component_prefix _pkgconfig_name _library)
+ 
+     string(REGEX MATCH "(.*)>=(.*)" _dummy "${_pkgconfig_name}")
+     if ("${CMAKE_MATCH_2}" STREQUAL "")
+-        pkg_check_modules(PC_${_component_prefix} "${_pkgconfig_name} >= ${GStreamer_FIND_VERSION}")
++        pkg_check_modules(PC_${_component_prefix} "${_pkgconfig_name} >= ${GSTREAMER_1_0_MINIMUM_VERSION}")
+     else ()
+         pkg_check_modules(PC_${_component_prefix} ${_pkgconfig_name})
+     endif ()
+-- 
+2.11.0
+