Revert "render/egl: remove unused gbm_device member"

This reverts commit 306cf11d87.

include/wlr/render/egl.h

@@ -41,6 +41,7 @@ struct wlr_egl {
 	EGLConfig config; // may be EGL_NO_CONFIG
 	EGLContext context;
 	EGLDeviceEXT device; // may be EGL_NO_DEVICE_EXT
+	struct gbm_device *gbm_device;
 
 	struct {
 		// Display extensions

render/egl.c

@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <gbm.h>
 #include <wlr/render/egl.h>
 #include <wlr/util/log.h>
 #include <wlr/util/region.h>
@@ -487,6 +488,10 @@ void wlr_egl_destroy(struct wlr_egl *egl) {
 	eglTerminate(egl->display);
 	eglReleaseThread();
 
+	if (egl->gbm_device) {
+		gbm_device_destroy(egl->gbm_device);
+	}
+
 	free(egl);
 }
 

render/wlr_renderer.c

@@ -1,6 +1,7 @@
 #include <assert.h>
 #include <stdbool.h>
 #include <stdlib.h>
+#include <gbm.h>
 #include <wlr/render/egl.h>
 #include <wlr/render/gles2.h>
 #include <wlr/render/interface.h>