opencv: add missing indirect dependency from gstreamer

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/opencv/Config.in

@@ -134,6 +134,7 @@ comment "ffmpeg support needs a toolchain w/ largefile, IPv6"
 
 config BR2_PACKAGE_OPENCV_WITH_GSTREAMER
 	bool "gstreamer support"
+	depends on BR2_USE_MMU # gstreamer -> libglib2
 	depends on BR2_USE_WCHAR # gstreamer -> libglib2
 	depends on BR2_TOOLCHAIN_HAS_THREADS # gstreamer -> libglib2
 	select BR2_PACKAGE_GSTREAMER
@@ -141,6 +142,7 @@ config BR2_PACKAGE_OPENCV_WITH_GSTREAMER
 	select BR2_PACKAGE_GST_PLUGINS_BASE_PLUGIN_APP
 
 comment "gstreamer support needs a toolchain w/ wchar, threads"
+	depends on BR2_USE_MMU
 	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS
 
 config BR2_PACKAGE_OPENCV_WITH_GTK