package/x11r7/xserver_xorg-server: fix mesa3d glx support

Commit 5cb821d5635 added a new option to enable GLX support in mesa3d.
Before that, GLX was implicitly enabled whenever a DRI driver was built.
Adjust xserver_xorg-server to use the new GLX option instead of just
DRI.

Signed-off-by: Carlos Santos <unixmania@gmail.com>
Acked-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/x11r7/xserver_xorg-server/xserver_xorg-server.mk

@@ -120,7 +120,7 @@ else # modular
 XSERVER_XORG_SERVER_CONF_OPTS += --disable-kdrive --disable-xfbdev
 endif
 
-ifeq ($(BR2_PACKAGE_MESA3D_DRI_DRIVER),y)
+ifeq ($(BR2_PACKAGE_MESA3D_OPENGL_GLX)),y)
 XSERVER_XORG_SERVER_CONF_OPTS += --enable-dri --enable-glx
 XSERVER_XORG_SERVER_DEPENDENCIES += mesa3d
 else