[gnome-build-meta] Revert "sdk/cogl.bst: Disabling kms egl backend, it needs gbm"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 8b106306fc0b461a14e3bf6f1d1ed48e369f444b
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Sat Jun 22 12:45:47 2019 -0500

    Revert "sdk/cogl.bst: Disabling kms egl backend, it needs gbm"
    
    This reverts commit b28e1cc5f689f20789cbd54b483d79747170dae0.

 elements/sdk/cogl.bst | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/elements/sdk/cogl.bst b/elements/sdk/cogl.bst
index 84177e5f..cc462097 100644
--- a/elements/sdk/cogl.bst
+++ b/elements/sdk/cogl.bst
@@ -38,3 +38,4 @@ variables:
     --enable-xlib-egl-platform
     --enable-wayland-egl-platform
     --enable-wayland-egl-server
+    --enable-kms-egl-platform