Infineon: Update BSP for XMC devices. Improve boot time
diff --git a/boot/cypress/Makefile b/boot/cypress/Makefile
index e901317..a444c04 100644
--- a/boot/cypress/Makefile
+++ b/boot/cypress/Makefile
@@ -65,7 +65,7 @@
 
 # Defines whether or not make all compile warnings into errors for application
 # source code (but not for library source code)
-WARN_AS_ERR = 0
+WARN_AS_ERR ?= 1
 
 ifneq ($(filter $(APP_NAME), $(APPS)),)
 include ./$(APP_NAME)/$(APP_NAME).mk