test/overlay builds every time

Hi Maxime & Pantelis,

I notice that this directory always builds its files even if seemingly nothing has changed:

LD test/built-in.o DTC test/overlay/test-fdt-base.dtb DTB test/overlay/test-fdt-base.dtb.S AS test/overlay/test-fdt-base.dtb.o DTC test/overlay/test-fdt-overlay.dtb DTB test/overlay/test-fdt-overlay.dtb.S AS test/overlay/test-fdt-overlay.dtb.o DTC test/overlay/test-fdt-overlay-stacked.dtb DTB test/overlay/test-fdt-overlay-stacked.dtb.S AS test/overlay/test-fdt-overlay-stacked.dtb.o LD test/overlay/built-in.o LD u-boot

Do either of you know what might be causing this? Can we fix it?

Thanks, Simon