c1d99c5791
fdt_load_dtb_overlays was written to unload previous overlay when a new valid one is come across. fdt_apply_overlays further down is written to iterate over all .dtbo's currently loaded and apply them one-by-one. Correct fdt_load_dtb_overlays to stop dropping valid overlays that were previously loaded and match expectations. Reviewed by: gonzo, imp Differential Revision: https://reviews.freebsd.org/D13659