staging: greybus: Add blank line after declaration

Add a blank line after a declaration. Error found by checkpatch.

Signed-off-by: Elizabeth Ferdman <[e-mail]>
Reviewed-by: Vaibhav Agarwal <[e-mail]>
Reviewed-by: Mark Greer <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/greybus/audio_topology.c

···
 				  const char *name)
 {
 	struct gbaudio_widget *widget;
+
 	list_for_each_entry(widget, &module->widget_list, list) {
 		if (!strncmp(widget->name, name, NAME_SIZE))
 			return widget->id;