Load an XKB keymap and state in the compositor

Not used yet, but will be in future commits.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
diff --git a/src/compositor.h b/src/compositor.h
index 64dc349..e828470 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -269,6 +269,9 @@
 
 	struct {
 		struct xkb_rule_names names;
+		struct xkb_context *context;
+		struct xkb_keymap *keymap;
+		struct xkb_state *state;
 	} xkb_info;
 };