static display bus doesn't show up, assume used if static display exists

Author: RetiredWizard

shared-module/displayio/__init__.c

@@ -527,7 +527,8 @@ primary_display_t *allocate_display_or_raise(void) {
 primary_display_bus_t *allocate_display_bus(void) {
     for (uint8_t i = 0; i < max_allocated_display; i++) {
         mp_const_obj_t display_bus_type = DYN_DISPLAY_BUSES(i).bus_base.type;
-        if (display_bus_type == NULL || display_bus_type == &mp_type_NoneType) {
+        if ((display_bus_type == NULL || display_bus_type == &mp_type_NoneType) &&
+            (i >= CIRCUITPY_DISPLAY_LIMIT || (!is_display_active(DYN_DISPLAYS_ADR(i, display_base))))) {
             // Clear this memory so it is in a known state before init.
             memset(DYN_DISPLAY_BUSES_ADR0(i), 0, sizeof(display_buses[0]));
             #if CIRCUITPY_OS_GETENV && CIRCUITPY_SET_DISPLAY_LIMIT