Minor fix to ensure proper image header size is correct in test-app.

Author: dgarske

test-app/Makefile

@@ -4,6 +4,10 @@ TARGET?=none
 ARCH?=ARM
 KINETIS_CMSIS?=$(KINETIS)/CMSIS
 
+ifeq ($(SIGN),RSA2048)
+  IMAGE_HEADER_SIZE:=512
+endif
+
 CFLAGS:=-g -ggdb -Wall -Wstack-usage=1024 -ffreestanding -Wno-unused -DPLATFORM_$(TARGET) -I../include -nostartfiles
 
 APP_OBJS:=app_$(TARGET).o led.o system.o timer.o ../hal/$(TARGET).o ../src/libwolfboot.o