Merge upstream changes from Marlin 2.1.1

buildroot/tests/STM32F401RC_creality

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+#
+# Build tests for STM32F401RC_creality
+#
+
+# exit on first failure
+set -e
+
+use_example_configs "Creality/Ender-3 V2/CrealityV422/MarlinUI"
+opt_add SDCARD_EEPROM_EMULATION AUTO_BED_LEVELING_BILINEAR Z_SAFE_HOMING
+opt_set MOTHERBOARD BOARD_CREALITY_V24S1_301F4
+exec_test $1 $2 "Ender 3 v2 with MarlinUI" "$3"
+
+# clean up
+restore_configs