gst1-plugins-bad: Add kmssink support

Add support for the KMS video sink element. From the Gstreamer 1.10
release notes:

"New element kmssink to render video using Direct Rendering Manager (DRM)
and Kernel Mode Setting (KMS) subsystems in the Linux kernel. It is oriented
to be used mostly in embedded systems."

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gst1-plugins-bad/Config.in

@@ -549,6 +549,13 @@ config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_HLS
 	help
 	  Fragmented streaming plugins
 
+config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_KMS
+	bool "kmssink"
+	depends on BR2_TOOLCHAIN_HAS_THREADS #  libdrm -> libpthread-stubs
+	select BR2_PACKAGE_LIBDRM
+	help
+	  KMS video sink
+
 config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_LIBMMS
 	bool "libmms"
 	depends on BR2_USE_WCHAR # libmms -> libglib2

package/gstreamer1/gst1-plugins-bad/gst1-plugins-bad.mk

@@ -680,6 +680,13 @@ else
 GST1_PLUGINS_BAD_CONF_OPTS += --disable-hls
 endif
 
+ifeq ($(BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_KMS),y)
+GST1_PLUGINS_BAD_CONF_OPTS += --enable-kms
+GST1_PLUGINS_BAD_DEPENDENCIES += libdrm
+else
+GST1_PLUGINS_BAD_CONF_OPTS += --disable-kms
+endif
+
 ifeq ($(BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_LIBMMS),y)
 GST1_PLUGINS_BAD_CONF_OPTS += --enable-libmms
 GST1_PLUGINS_BAD_DEPENDENCIES += libmms