try to add arm-openwrt-linux-strip

Author: zoobab

CMakeLists.txt

@@ -96,7 +96,7 @@ project (Jerry CXX C ASM)
  elseif("${PLATFORM}" STREQUAL "OPENWRT")
   set(PLATFORM_EXT "LINUX")
   set(EXTERNAL_BUILD FALSE)
-
+  find_program(CMAKE_STRIP NAMES arm-openwrt-linux-strip strip)
   option(STRIP_RELEASE_BINARY "Strip symbols from release binaries" ON)
  else()
   message(FATAL_ERROR "Platform '${PLATFORM}' is not supported")