gl-renderer: Rename gl_renderer::output_create to output_window_create

No functional change. This patch renames gl_renderer_output_create() to
gl_renderer_output_window_create(), which is something more descriptive
of what the function does.

Signed-off-by: Miguel A Vico Moya <mvicomoya@nvidia.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Reviewed-by: James Jones <jajones@nvidia.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/libweston/compositor-wayland.c b/libweston/compositor-wayland.c
index 869659c..1a46c4e 100644
--- a/libweston/compositor-wayland.c
+++ b/libweston/compositor-wayland.c
@@ -700,12 +700,12 @@
 		return -1;
 	}
 
-	if (gl_renderer->output_create(&output->base,
-				       output->gl.egl_window,
-				       output->gl.egl_window,
-				       gl_renderer->alpha_attribs,
-				       NULL,
-				       0) < 0)
+	if (gl_renderer->output_window_create(&output->base,
+					      output->gl.egl_window,
+					      output->gl.egl_window,
+					      gl_renderer->alpha_attribs,
+					      NULL,
+					      0) < 0)
 		goto cleanup_window;
 
 	return 0;