package/mesa3d: virgl driver needs egl & drm

Fixes
http://autobuild.buildroot.net/results/7b3/7b38131ebb6b20daec1a6d2c49b25c5300f319fe/
http://autobuild.buildroot.net/results/61b/61b8b87f0460751257f480ef478e753635cab798/
http://autobuild.buildroot.net/results/971/97154ea0e780623d23b20b6b9fcc5df6190875c9/
http://autobuild.buildroot.net/results/dcf/dcf4e31e6b6eeadc7a2d7c87697f57d699673b9e/
http://autobuild.buildroot.net/results/399/399cca80ada5798decc87bff69a3acc432e8f3d0/
http://autobuild.buildroot.net/results/60f/60f63958b2310e00937c498ddf2a0295ff77683a/

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mesa3d/Config.in

@@ -79,6 +79,7 @@ config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_SWRAST
 config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_VIRGL
 	bool "Gallium virgl driver"
 	select BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
+	select BR2_PACKAGE_MESA3D_OPENGL_EGL
 	help
 	  virgl is the 3D acceleration backend for the virtio-gpu
 	  shipping with qemu.

package/mesa3d/mesa3d.mk

@@ -131,6 +131,8 @@ ifeq ($(BR2_PACKAGE_MESA3D_OPENGL_EGL),y)
 MESA3D_PROVIDES += libegl
 ifeq ($(BR2_PACKAGE_MESA3D_DRI_DRIVER),y)
 MESA3D_EGL_PLATFORMS = drm
+else ifeq ($(BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_VIRGL),y)
+MESA3D_EGL_PLATFORMS = drm
 endif
 ifeq ($(BR2_PACKAGE_WAYLAND),y)
 MESA3D_DEPENDENCIES += wayland