sdl2: add KMS/DRM video driver support

Signed-off-by: Olivier Schonken <olivier.schonken@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sdl2/Config.in

@@ -29,6 +29,13 @@ comment "X11 video driver needs X.org"
 	depends on !BR2_PACKAGE_XORG7
 	depends on BR2_USE_MMU
 
+config BR2_PACKAGE_SDL2_KMSDRM
+	bool "KMS/DRM video driver"
+	depends on BR2_PACKAGE_LIBDRM
+
+comment "KMS/DRM video driver needs libdrm"
+	depends on !BR2_PACKAGE_LIBDRM
+
 config BR2_PACKAGE_SDL2_OPENGL
 	bool "OpenGL (GLX)"
 	depends on BR2_PACKAGE_HAS_LIBGL

package/sdl2/sdl2.mk

@@ -125,4 +125,11 @@ else
 SDL2_CONF_OPTS += --disable-alsa
 endif
 
+ifeq ($(BR2_PACKAGE_SDL2_KMSDRM),y)
+SDL2_DEPENDENCIES += libdrm
+SDL2_CONF_OPTS += --enable-video-kmsdrm
+else
+SDL2_CONF_OPTS += --disable-video-kmsdrm
+endif
+
 $(eval $(autotools-package))